11899640

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{571}}^1$

素因数の和:1103

約数の個数: 32

約数和(自身を含む): 26872560

約数和(自身を除く): 14972920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 571, 1042, 1142, 2084, 2284, 2605, 2855, 4168, 4568, 5210, 5710, 10420, 11420, 20840, 22840, 297491, 594982, 1189964, 1487455, 2379928, 2974910, 5949820, 11899640]

約数ペア:

[(1, 11899640), (2, 5949820), (4, 2974910), (5, 2379928), (8, 1487455), (10, 1189964), (20, 594982), (40, 297491), (521, 22840), (571, 20840), (1042, 11420), (1142, 10420), (2084, 5710), (2284, 5210), (2605, 4568), (2855, 4168)]