20325505

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{647}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 25069824

約数和(自身を除く): 4744319

約数列:

[1, 5, 61, 103, 305, 515, 647, 3235, 6283, 31415, 39467, 66641, 197335, 333205, 4065101, 20325505]

約数ペア:

[(1, 20325505), (5, 4065101), (61, 333205), (103, 197335), (305, 66641), (515, 39467), (647, 31415), (3235, 6283)]