19715675

素因数分解:

$5^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{997}}^1$

素因数の和:1127

約数の個数: 24

約数和(自身を含む): 28215456

約数和(自身を除く): 8499781

約数列:

[1, 5, 7, 25, 35, 113, 175, 565, 791, 997, 2825, 3955, 4985, 6979, 19775, 24925, 34895, 112661, 174475, 563305, 788627, 2816525, 3943135, 19715675]

約数ペア:

[(1, 19715675), (5, 3943135), (7, 2816525), (25, 788627), (35, 563305), (113, 174475), (175, 112661), (565, 34895), (791, 24925), (997, 19775), (2825, 6979), (3955, 4985)]