21595791

素因数分解:

$3^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{1801}}^1$

素因数の和:2382

約数の個数: 16

約数和(自身を含む): 32983808

約数和(自身を除く): 11388017

約数列:

[1, 3, 7, 21, 571, 1713, 1801, 3997, 5403, 11991, 12607, 37821, 1028371, 3085113, 7198597, 21595791]

約数ペア:

[(1, 21595791), (3, 7198597), (7, 3085113), (21, 1028371), (571, 37821), (1713, 12607), (1801, 11991), (3997, 5403)]