20177785

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{2221}}^1$

素因数の和:2328

約数の個数: 16

約数和(自身を含む): 25597440

約数和(自身を除く): 5419655

約数列:

[1, 5, 23, 79, 115, 395, 1817, 2221, 9085, 11105, 51083, 175459, 255415, 877295, 4035557, 20177785]

約数ペア:

[(1, 20177785), (5, 4035557), (23, 877295), (79, 255415), (115, 175459), (395, 51083), (1817, 11105), (2221, 9085)]