20580217

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{1061}}^1$

素因数の和:1248

約数の個数: 16

約数和(自身を含む): 25080192

約数和(自身を除く): 4499975

約数列:

[1, 7, 17, 119, 163, 1061, 1141, 2771, 7427, 18037, 19397, 126259, 172943, 1210601, 2940031, 20580217]

約数ペア:

[(1, 20580217), (7, 2940031), (17, 1210601), (119, 172943), (163, 126259), (1061, 19397), (1141, 18037), (2771, 7427)]