21618821

素因数分解:

$7^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:452

約数の個数: 16

約数和(自身を含む): 25229568

約数和(自身を除く): 3610747

約数列:

[1, 7, 113, 151, 181, 791, 1057, 1267, 17063, 20453, 27331, 119441, 143171, 191317, 3088403, 21618821]

約数ペア:

[(1, 21618821), (7, 3088403), (113, 191317), (151, 143171), (181, 119441), (791, 27331), (1057, 20453), (1267, 17063)]