639691668

素因数分解:

$2^2\times 3^6\times 7^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1$

素因数の和:95

約数の個数: 378

約数和(自身を含む): 2204084778

約数和(自身を除く): 1564393110

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 27, 28, 33, 36, 37, 42, 44, 49, 54, 63, 66, 74, 77, 81, 84, 98, 99, 108, 111, 121, 126, 132, 147, 148, 154, 162, 189, 196, 198, 222, 231, 242, 243, 252, 259, 294, 297, 308, 324, 333, 363, 378, 396, 407, 441, 444, 462, 484, 486, 518, 539, 567, 588, 594, 666, 693, 726, 729, 756, 777, 814, 847, 882, 891, 924, 972, 999, 1036, 1078, 1089, 1134, 1188, 1221, 1323, 1332, 1386, 1452, 1458, 1554, 1617, 1628, 1694, 1701, 1764, 1782, 1813, 1998, 2079, 2156, 2178, 2268, 2331, 2442, 2541, 2646, 2673, 2772, 2849, 2916, 2997, 3108, 3234, 3267, 3388, 3402, 3564, 3626, 3663, 3969, 3996, 4158, 4356, 4477, 4662, 4851, 4884, 5082, 5103, 5292, 5346, 5439, 5698, 5929, 5994, 6237, 6468, 6534, 6804, 6993, 7252, 7326, 7623, 7938, 8019, 8316, 8547, 8954, 8991, 9324, 9702, 9801, 10164, 10206, 10692, 10878, 10989, 11396, 11858, 11907, 11988, 12474, 13068, 13431, 13986, 14553, 14652, 15246, 15876, 16038, 16317, 17094, 17787, 17908, 17982, 18711, 19404, 19602, 19943, 20412, 20979, 21756, 21978, 22869, 23716, 23814, 24948, 25641, 26862, 26973, 27972, 29106, 29403, 30492, 31339, 32076, 32634, 32967, 34188, 35574, 35721, 35964, 37422, 39204, 39886, 40293, 41958, 43659, 43956, 45738, 47628, 48951, 51282, 53361, 53724, 53946, 56133, 58212, 58806, 59829, 62678, 62937, 65268, 65934, 68607, 71148, 71442, 74844, 76923, 79772, 80586, 83916, 87318, 88209, 91476, 94017, 97902, 98901, 102564, 106722, 107892, 112266, 117612, 119658, 120879, 125356, 125874, 130977, 131868, 137214, 142884, 146853, 153846, 160083, 161172, 174636, 176418, 179487, 188034, 188811, 195804, 197802, 205821, 213444, 219373, 224532, 230769, 239316, 241758, 251748, 261954, 274428, 282051, 293706, 296703, 307692, 320166, 352836, 358974, 362637, 376068, 377622, 392931, 395604, 411642, 438746, 440559, 461538, 480249, 483516, 523908, 538461, 564102, 587412, 593406, 617463, 640332, 658119, 692307, 717948, 725274, 755244, 785862, 823284, 846153, 877492, 881118, 923076, 960498, 1076922, 1087911, 1128204, 1186812, 1234926, 1316238, 1321677, 1384614, 1440747, 1450548, 1571724, 1615383, 1692306, 1762236, 1920996, 1974357, 2076921, 2153844, 2175822, 2469852, 2538459, 2632476, 2643354, 2769228, 2881494, 3230766, 3263733, 3384612, 3948714, 4153842, 4322241, 4351644, 4846149, 5076918, 5286708, 5762988, 5923071, 6461532, 6527466, 7615377, 7897428, 8307684, 8644482, 9692298, 10153836, 11846142, 13054932, 14538447, 15230754, 17288964, 17769213, 19384596, 22846131, 23692284, 29076894, 30461508, 35538426, 45692262, 53307639, 58153788, 71076852, 91384524, 106615278, 159922917, 213230556, 319845834, 639691668]

約数ペア:

[(1, 639691668), (2, 319845834), (3, 213230556), (4, 159922917), (6, 106615278), (7, 91384524), (9, 71076852), (11, 58153788), (12, 53307639), (14, 45692262), (18, 35538426), (21, 30461508), (22, 29076894), (27, 23692284), (28, 22846131), (33, 19384596), (36, 17769213), (37, 17288964), (42, 15230754), (44, 14538447), (49, 13054932), (54, 11846142), (63, 10153836), (66, 9692298), (74, 8644482), (77, 8307684), (81, 7897428), (84, 7615377), (98, 6527466), (99, 6461532), (108, 5923071), (111, 5762988), (121, 5286708), (126, 5076918), (132, 4846149), (147, 4351644), (148, 4322241), (154, 4153842), (162, 3948714), (189, 3384612), (196, 3263733), (198, 3230766), (222, 2881494), (231, 2769228), (242, 2643354), (243, 2632476), (252, 2538459), (259, 2469852), (294, 2175822), (297, 2153844), (308, 2076921), (324, 1974357), (333, 1920996), (363, 1762236), (378, 1692306), (396, 1615383), (407, 1571724), (441, 1450548), (444, 1440747), (462, 1384614), (484, 1321677), (486, 1316238), (518, 1234926), (539, 1186812), (567, 1128204), (588, 1087911), (594, 1076922), (666, 960498), (693, 923076), (726, 881118), (729, 877492), (756, 846153), (777, 823284), (814, 785862), (847, 755244), (882, 725274), (891, 717948), (924, 692307), (972, 658119), (999, 640332), (1036, 617463), (1078, 593406), (1089, 587412), (1134, 564102), (1188, 538461), (1221, 523908), (1323, 483516), (1332, 480249), (1386, 461538), (1452, 440559), (1458, 438746), (1554, 411642), (1617, 395604), (1628, 392931), (1694, 377622), (1701, 376068), (1764, 362637), (1782, 358974), (1813, 352836), (1998, 320166), (2079, 307692), (2156, 296703), (2178, 293706), (2268, 282051), (2331, 274428), (2442, 261954), (2541, 251748), (2646, 241758), (2673, 239316), (2772, 230769), (2849, 224532), (2916, 219373), (2997, 213444), (3108, 205821), (3234, 197802), (3267, 195804), (3388, 188811), (3402, 188034), (3564, 179487), (3626, 176418), (3663, 174636), (3969, 161172), (3996, 160083), (4158, 153846), (4356, 146853), (4477, 142884), (4662, 137214), (4851, 131868), (4884, 130977), (5082, 125874), (5103, 125356), (5292, 120879), (5346, 119658), (5439, 117612), (5698, 112266), (5929, 107892), (5994, 106722), (6237, 102564), (6468, 98901), (6534, 97902), (6804, 94017), (6993, 91476), (7252, 88209), (7326, 87318), (7623, 83916), (7938, 80586), (8019, 79772), (8316, 76923), (8547, 74844), (8954, 71442), (8991, 71148), (9324, 68607), (9702, 65934), (9801, 65268), (10164, 62937), (10206, 62678), (10692, 59829), (10878, 58806), (10989, 58212), (11396, 56133), (11858, 53946), (11907, 53724), (11988, 53361), (12474, 51282), (13068, 48951), (13431, 47628), (13986, 45738), (14553, 43956), (14652, 43659), (15246, 41958), (15876, 40293), (16038, 39886), (16317, 39204), (17094, 37422), (17787, 35964), (17908, 35721), (17982, 35574), (18711, 34188), (19404, 32967), (19602, 32634), (19943, 32076), (20412, 31339), (20979, 30492), (21756, 29403), (21978, 29106), (22869, 27972), (23716, 26973), (23814, 26862), (24948, 25641)]