38991640

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1871}}^1$

素因数の和:2403

約数の個数: 32

約数和(自身を含む): 87946560

約数和(自身を除く): 48954920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 1871, 2084, 2605, 3742, 4168, 5210, 7484, 9355, 10420, 14968, 18710, 20840, 37420, 74840, 974791, 1949582, 3899164, 4873955, 7798328, 9747910, 19495820, 38991640]

約数ペア:

[(1, 38991640), (2, 19495820), (4, 9747910), (5, 7798328), (8, 4873955), (10, 3899164), (20, 1949582), (40, 974791), (521, 74840), (1042, 37420), (1871, 20840), (2084, 18710), (2605, 14968), (3742, 10420), (4168, 9355), (5210, 7484)]