21050913

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31751}}^1$

素因数の和:31784

約数の個数: 16

約数和(自身を含む): 32006016

約数和(自身を除く): 10955103

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 31751, 95253, 412763, 539767, 1238289, 1619301, 7016971, 21050913]

約数ペア:

[(1, 21050913), (3, 7016971), (13, 1619301), (17, 1238289), (39, 539767), (51, 412763), (221, 95253), (663, 31751)]