20522915

素因数分解:

$5^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{397}}^1$

素因数の和:627

約数の個数: 24

約数和(自身を含む): 28856592

約数和(自身を除く): 8333677

約数列:

[1, 5, 7, 35, 49, 211, 245, 397, 1055, 1477, 1985, 2779, 7385, 10339, 13895, 19453, 51695, 83767, 97265, 418835, 586369, 2931845, 4104583, 20522915]

約数ペア:

[(1, 20522915), (5, 4104583), (7, 2931845), (35, 586369), (49, 418835), (211, 97265), (245, 83767), (397, 51695), (1055, 19453), (1477, 13895), (1985, 10339), (2779, 7385)]