17921687

素因数分解:

$7^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:422

約数の個数: 16

約数和(自身を含む): 20939520

約数和(自身を除く): 3017833

約数列:

[1, 7, 113, 139, 163, 791, 973, 1141, 15707, 18419, 22657, 109949, 128933, 158599, 2560241, 17921687]

約数ペア:

[(1, 17921687), (7, 2560241), (113, 158599), (139, 128933), (163, 109949), (791, 22657), (973, 18419), (1141, 15707)]