28756540

素因数分解:

$2^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1621}}^1$

素因数の和:2517

約数の個数: 24

約数和(自身を含む): 60494112

約数和(自身を除く): 31737572

約数列:

[1, 2, 4, 5, 10, 20, 887, 1621, 1774, 3242, 3548, 4435, 6484, 8105, 8870, 16210, 17740, 32420, 1437827, 2875654, 5751308, 7189135, 14378270, 28756540]

約数ペア:

[(1, 28756540), (2, 14378270), (4, 7189135), (5, 5751308), (10, 2875654), (20, 1437827), (887, 32420), (1621, 17740), (1774, 16210), (3242, 8870), (3548, 8105), (4435, 6484)]