21000907996

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1\times {\mathrm{11701}}^1$

素因数の和:11990

約数の個数: 48

約数和(自身を含む): 38523171232

約数和(自身を除く): 17522263236

約数列:

[1, 2, 4, 37, 67, 74, 134, 148, 181, 268, 362, 724, 2479, 4958, 6697, 9916, 11701, 12127, 13394, 23402, 24254, 26788, 46804, 48508, 432937, 448699, 783967, 865874, 897398, 1567934, 1731748, 1794796, 2117881, 3135868, 4235762, 8471524, 29006779, 58013558, 78361597, 116027116, 141898027, 156723194, 283796054, 313446388, 567592108, 5250226999, 10500453998, 21000907996]

約数ペア:

[(1, 21000907996), (2, 10500453998), (4, 5250226999), (37, 567592108), (67, 313446388), (74, 283796054), (134, 156723194), (148, 141898027), (181, 116027116), (268, 78361597), (362, 58013558), (724, 29006779), (2479, 8471524), (4958, 4235762), (6697, 3135868), (9916, 2117881), (11701, 1794796), (12127, 1731748), (13394, 1567934), (23402, 897398), (24254, 865874), (26788, 783967), (46804, 448699), (48508, 432937)]