20921272078

素因数分解:

$2^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2477}}^1\times {\mathrm{4049}}^1$

素因数の和:6684

約数の個数: 32

約数和(自身を含む): 36129240000

約数和(自身を除く): 15207967922

約数列:

[1, 2, 7, 14, 149, 298, 1043, 2086, 2477, 4049, 4954, 8098, 17339, 28343, 34678, 56686, 369073, 603301, 738146, 1206602, 2583511, 4223107, 5167022, 8446214, 10029373, 20058746, 70205611, 140411222, 1494376577, 2988753154, 10460636039, 20921272078]

約数ペア:

[(1, 20921272078), (2, 10460636039), (7, 2988753154), (14, 1494376577), (149, 140411222), (298, 70205611), (1043, 20058746), (2086, 10029373), (2477, 8446214), (4049, 5167022), (4954, 4223107), (8098, 2583511), (17339, 1206602), (28343, 738146), (34678, 603301), (56686, 369073)]