28789820

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{2521}}^1$

素因数の和:3101

約数の個数: 24

約数和(自身を含む): 60588528

約数和(自身を除く): 31798708

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 2284, 2521, 2855, 5042, 5710, 10084, 11420, 12605, 25210, 50420, 1439491, 2878982, 5757964, 7197455, 14394910, 28789820]

約数ペア:

[(1, 28789820), (2, 14394910), (4, 7197455), (5, 5757964), (10, 2878982), (20, 1439491), (571, 50420), (1142, 25210), (2284, 12605), (2521, 11420), (2855, 10084), (5042, 5710)]