21261110

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2441}}^1$

素因数の和:2528

約数の個数: 32

約数和(自身を含む): 41846112

約数和(自身を除く): 20585002

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 335, 670, 871, 1742, 2441, 4355, 4882, 8710, 12205, 24410, 31733, 63466, 158665, 163547, 317330, 327094, 817735, 1635470, 2126111, 4252222, 10630555, 21261110]

約数ペア:

[(1, 21261110), (2, 10630555), (5, 4252222), (10, 2126111), (13, 1635470), (26, 817735), (65, 327094), (67, 317330), (130, 163547), (134, 158665), (335, 63466), (670, 31733), (871, 24410), (1742, 12205), (2441, 8710), (4355, 4882)]