20509565

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{2389}}^1$

素因数の和:2512

約数の個数: 16

約数和(自身を含む): 26328240

約数和(自身を除く): 5818675

約数列:

[1, 5, 17, 85, 101, 505, 1717, 2389, 8585, 11945, 40613, 203065, 241289, 1206445, 4101913, 20509565]

約数ペア:

[(1, 20509565), (5, 4101913), (17, 1206445), (85, 241289), (101, 203065), (505, 40613), (1717, 11945), (2389, 8585)]