18750605

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1\times {\mathrm{409}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 23114160

約数和(自身を除く): 4363555

約数列:

[1, 5, 53, 173, 265, 409, 865, 2045, 9169, 21677, 45845, 70757, 108385, 353785, 3750121, 18750605]

約数ペア:

[(1, 18750605), (5, 3750121), (53, 353785), (173, 108385), (265, 70757), (409, 45845), (865, 21677), (2045, 9169)]