21087950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{32443}}^1$

素因数の和:32468

約数の個数: 24

約数和(自身を含む): 42242088

約数和(自身を除く): 21154138

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 32443, 64886, 162215, 324430, 421759, 811075, 843518, 1622150, 2108795, 4217590, 10543975, 21087950]

約数ペア:

[(1, 21087950), (2, 10543975), (5, 4217590), (10, 2108795), (13, 1622150), (25, 843518), (26, 811075), (50, 421759), (65, 324430), (130, 162215), (325, 64886), (650, 32443)]