251491640

素因数分解:

$2^3\times 5^1\times {\mathrm{1801}}^1\times {\mathrm{3491}}^1$

素因数の和:5303

約数の個数: 32

約数和(自身を含む): 566332560

約数和(自身を除く): 314840920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1801, 3491, 3602, 6982, 7204, 9005, 13964, 14408, 17455, 18010, 27928, 34910, 36020, 69820, 72040, 139640, 6287291, 12574582, 25149164, 31436455, 50298328, 62872910, 125745820, 251491640]

約数ペア:

[(1, 251491640), (2, 125745820), (4, 62872910), (5, 50298328), (8, 31436455), (10, 25149164), (20, 12574582), (40, 6287291), (1801, 139640), (3491, 72040), (3602, 69820), (6982, 36020), (7204, 34910), (9005, 27928), (13964, 18010), (14408, 17455)]