20578545500

素因数分解:

$2^2\times 5^3\times {\mathrm{5749}}^1\times {\mathrm{7159}}^1$

素因数の和:12927

約数の個数: 48

約数和(自身を含む): 44957640000

約数和(自身を除く): 24379094500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 5749, 7159, 11498, 14318, 22996, 28636, 28745, 35795, 57490, 71590, 114980, 143180, 143725, 178975, 287450, 357950, 574900, 715900, 718625, 894875, 1437250, 1789750, 2874500, 3579500, 41157091, 82314182, 164628364, 205785455, 411570910, 823141820, 1028927275, 2057854550, 4115709100, 5144636375, 10289272750, 20578545500]

約数ペア:

[(1, 20578545500), (2, 10289272750), (4, 5144636375), (5, 4115709100), (10, 2057854550), (20, 1028927275), (25, 823141820), (50, 411570910), (100, 205785455), (125, 164628364), (250, 82314182), (500, 41157091), (5749, 3579500), (7159, 2874500), (11498, 1789750), (14318, 1437250), (22996, 894875), (28636, 718625), (28745, 715900), (35795, 574900), (57490, 357950), (71590, 287450), (114980, 178975), (143180, 143725)]