21092519

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1051}}^1$

素因数の和:1166

約数の個数: 16

約数和(自身を含む): 25046016

約数和(自身を除く): 3953497

約数列:

[1, 7, 47, 61, 329, 427, 1051, 2867, 7357, 20069, 49397, 64111, 345779, 448777, 3013217, 21092519]

約数ペア:

[(1, 21092519), (7, 3013217), (47, 448777), (61, 345779), (329, 64111), (427, 49397), (1051, 20069), (2867, 7357)]