172319329

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{20809}}^1$

素因数の和:20849

約数の個数: 18

約数和(自身を含む): 217069110

約数和(自身を除く): 44749781

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 8281, 20809, 145663, 270517, 1019641, 1893619, 3516721, 13255333, 24617047, 172319329]

約数ペア:

[(1, 172319329), (7, 24617047), (13, 13255333), (49, 3516721), (91, 1893619), (169, 1019641), (637, 270517), (1183, 145663), (8281, 20809)]