20499005

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{1429}}^1$

素因数の和:1604

約数の個数: 16

約数和(自身を含む): 26083200

約数和(自身を除く): 5584195

約数列:

[1, 5, 19, 95, 151, 755, 1429, 2869, 7145, 14345, 27151, 135755, 215779, 1078895, 4099801, 20499005]

約数ペア:

[(1, 20499005), (5, 4099801), (19, 1078895), (95, 215779), (151, 135755), (755, 27151), (1429, 14345), (2869, 7145)]