20542925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2039}}^1$

素因数の和:2093

約数の個数: 24

約数和(自身を含む): 28331520

約数和(自身を除く): 7788595

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2039, 10075, 10195, 26507, 50975, 63209, 132535, 316045, 662675, 821717, 1580225, 4108585, 20542925]

約数ペア:

[(1, 20542925), (5, 4108585), (13, 1580225), (25, 821717), (31, 662675), (65, 316045), (155, 132535), (325, 63209), (403, 50975), (775, 26507), (2015, 10195), (2039, 10075)]