21427211

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:430

約数の個数: 16

約数和(自身を含む): 23786784

約数和(自身を除く): 2359573

約数列:

[1, 13, 53, 137, 227, 689, 1781, 2951, 7261, 12031, 31099, 94393, 156403, 404287, 1648247, 21427211]

約数ペア:

[(1, 21427211), (13, 1648247), (53, 404287), (137, 156403), (227, 94393), (689, 31099), (1781, 12031), (2951, 7261)]