20781684

素因数分解:

$2^2\times 3^4\times 7^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1$

素因数の和:65

約数の個数: 240

約数和(自身を含む): 73180800

約数和(自身を除く): 52399116

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 17, 18, 21, 22, 27, 28, 33, 34, 36, 42, 44, 49, 51, 54, 63, 66, 68, 77, 81, 84, 98, 99, 102, 108, 119, 126, 132, 147, 153, 154, 162, 187, 189, 196, 198, 204, 231, 238, 252, 294, 297, 306, 308, 324, 343, 357, 374, 378, 396, 441, 459, 462, 476, 539, 561, 567, 588, 594, 612, 686, 693, 714, 748, 756, 833, 882, 891, 918, 924, 1029, 1071, 1078, 1122, 1134, 1188, 1309, 1323, 1372, 1377, 1386, 1428, 1617, 1666, 1683, 1764, 1782, 1836, 2058, 2079, 2142, 2156, 2244, 2268, 2499, 2618, 2646, 2754, 2772, 3087, 3213, 3234, 3332, 3366, 3564, 3773, 3927, 3969, 4116, 4158, 4284, 4851, 4998, 5049, 5236, 5292, 5508, 5831, 6174, 6237, 6426, 6468, 6732, 7497, 7546, 7854, 7938, 8316, 9163, 9261, 9639, 9702, 9996, 10098, 11319, 11662, 11781, 12348, 12474, 12852, 14553, 14994, 15092, 15147, 15708, 15876, 17493, 18326, 18522, 19278, 19404, 20196, 22491, 22638, 23324, 23562, 24948, 27489, 27783, 29106, 29988, 30294, 33957, 34986, 35343, 36652, 37044, 38556, 43659, 44982, 45276, 47124, 52479, 54978, 55566, 58212, 60588, 64141, 67473, 67914, 69972, 70686, 82467, 87318, 89964, 101871, 104958, 106029, 109956, 111132, 128282, 134946, 135828, 141372, 157437, 164934, 174636, 192423, 203742, 209916, 212058, 247401, 256564, 269892, 305613, 314874, 329868, 384846, 407484, 424116, 472311, 494802, 577269, 611226, 629748, 742203, 769692, 944622, 989604, 1154538, 1222452, 1484406, 1731807, 1889244, 2309076, 2968812, 3463614, 5195421, 6927228, 10390842, 20781684]

約数ペア:

[(1, 20781684), (2, 10390842), (3, 6927228), (4, 5195421), (6, 3463614), (7, 2968812), (9, 2309076), (11, 1889244), (12, 1731807), (14, 1484406), (17, 1222452), (18, 1154538), (21, 989604), (22, 944622), (27, 769692), (28, 742203), (33, 629748), (34, 611226), (36, 577269), (42, 494802), (44, 472311), (49, 424116), (51, 407484), (54, 384846), (63, 329868), (66, 314874), (68, 305613), (77, 269892), (81, 256564), (84, 247401), (98, 212058), (99, 209916), (102, 203742), (108, 192423), (119, 174636), (126, 164934), (132, 157437), (147, 141372), (153, 135828), (154, 134946), (162, 128282), (187, 111132), (189, 109956), (196, 106029), (198, 104958), (204, 101871), (231, 89964), (238, 87318), (252, 82467), (294, 70686), (297, 69972), (306, 67914), (308, 67473), (324, 64141), (343, 60588), (357, 58212), (374, 55566), (378, 54978), (396, 52479), (441, 47124), (459, 45276), (462, 44982), (476, 43659), (539, 38556), (561, 37044), (567, 36652), (588, 35343), (594, 34986), (612, 33957), (686, 30294), (693, 29988), (714, 29106), (748, 27783), (756, 27489), (833, 24948), (882, 23562), (891, 23324), (918, 22638), (924, 22491), (1029, 20196), (1071, 19404), (1078, 19278), (1122, 18522), (1134, 18326), (1188, 17493), (1309, 15876), (1323, 15708), (1372, 15147), (1377, 15092), (1386, 14994), (1428, 14553), (1617, 12852), (1666, 12474), (1683, 12348), (1764, 11781), (1782, 11662), (1836, 11319), (2058, 10098), (2079, 9996), (2142, 9702), (2156, 9639), (2244, 9261), (2268, 9163), (2499, 8316), (2618, 7938), (2646, 7854), (2754, 7546), (2772, 7497), (3087, 6732), (3213, 6468), (3234, 6426), (3332, 6237), (3366, 6174), (3564, 5831), (3773, 5508), (3927, 5292), (3969, 5236), (4116, 5049), (4158, 4998), (4284, 4851)]