21255013

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1061}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 24264576

約数和(自身を除く): 3009563

約数列:

[1, 13, 23, 67, 299, 871, 1061, 1541, 13793, 20033, 24403, 71087, 317239, 924131, 1635001, 21255013]

約数ペア:

[(1, 21255013), (13, 1635001), (23, 924131), (67, 317239), (299, 71087), (871, 24403), (1061, 20033), (1541, 13793)]