21130956

素因数分解:

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

素因数の和:63

約数の個数: 180

約数和(自身を含む): 70680456

約数和(自身を除く): 49549500

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 27, 28, 33, 36, 42, 44, 49, 54, 63, 66, 77, 81, 84, 98, 99, 108, 121, 126, 132, 147, 154, 162, 189, 196, 198, 231, 242, 252, 294, 297, 308, 324, 363, 378, 396, 441, 462, 484, 539, 567, 588, 594, 693, 726, 756, 847, 882, 891, 924, 1078, 1089, 1134, 1188, 1323, 1331, 1386, 1452, 1617, 1694, 1764, 1782, 2079, 2156, 2178, 2268, 2541, 2646, 2662, 2772, 3234, 3267, 3388, 3564, 3969, 3993, 4158, 4356, 4851, 5082, 5292, 5324, 5929, 6237, 6468, 6534, 7623, 7938, 7986, 8316, 9317, 9702, 9801, 10164, 11858, 11979, 12474, 13068, 14553, 15246, 15876, 15972, 17787, 18634, 19404, 19602, 22869, 23716, 23958, 24948, 27951, 29106, 30492, 35574, 35937, 37268, 39204, 43659, 45738, 47916, 53361, 55902, 58212, 65219, 68607, 71148, 71874, 83853, 87318, 91476, 106722, 107811, 111804, 130438, 137214, 143748, 160083, 167706, 174636, 195657, 213444, 215622, 251559, 260876, 274428, 320166, 335412, 391314, 431244, 480249, 503118, 586971, 640332, 754677, 782628, 960498, 1006236, 1173942, 1509354, 1760913, 1920996, 2347884, 3018708, 3521826, 5282739, 7043652, 10565478, 21130956]

約数ペア:

[(1, 21130956), (2, 10565478), (3, 7043652), (4, 5282739), (6, 3521826), (7, 3018708), (9, 2347884), (11, 1920996), (12, 1760913), (14, 1509354), (18, 1173942), (21, 1006236), (22, 960498), (27, 782628), (28, 754677), (33, 640332), (36, 586971), (42, 503118), (44, 480249), (49, 431244), (54, 391314), (63, 335412), (66, 320166), (77, 274428), (81, 260876), (84, 251559), (98, 215622), (99, 213444), (108, 195657), (121, 174636), (126, 167706), (132, 160083), (147, 143748), (154, 137214), (162, 130438), (189, 111804), (196, 107811), (198, 106722), (231, 91476), (242, 87318), (252, 83853), (294, 71874), (297, 71148), (308, 68607), (324, 65219), (363, 58212), (378, 55902), (396, 53361), (441, 47916), (462, 45738), (484, 43659), (539, 39204), (567, 37268), (588, 35937), (594, 35574), (693, 30492), (726, 29106), (756, 27951), (847, 24948), (882, 23958), (891, 23716), (924, 22869), (1078, 19602), (1089, 19404), (1134, 18634), (1188, 17787), (1323, 15972), (1331, 15876), (1386, 15246), (1452, 14553), (1617, 13068), (1694, 12474), (1764, 11979), (1782, 11858), (2079, 10164), (2156, 9801), (2178, 9702), (2268, 9317), (2541, 8316), (2646, 7986), (2662, 7938), (2772, 7623), (3234, 6534), (3267, 6468), (3388, 6237), (3564, 5929), (3969, 5324), (3993, 5292), (4158, 5082), (4356, 4851)]