19879525

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 25784064

約数和(自身を除く): 5904539

約数列:

[1, 5, 25, 31, 113, 155, 227, 565, 775, 1135, 2825, 3503, 5675, 7037, 17515, 25651, 35185, 87575, 128255, 175925, 641275, 795181, 3975905, 19879525]

約数ペア:

[(1, 19879525), (5, 3975905), (25, 795181), (31, 641275), (113, 175925), (155, 128255), (227, 87575), (565, 35185), (775, 25651), (1135, 17515), (2825, 7037), (3503, 5675)]