804513620

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{40591}}^1$

素因数の和:41591

約数の個数: 24

約数和(自身を含む): 1691225088

約数和(自身を除く): 886711468

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3964, 4955, 9910, 19820, 40591, 81182, 162364, 202955, 405910, 811820, 40225681, 80451362, 160902724, 201128405, 402256810, 804513620]

約数ペア:

[(1, 804513620), (2, 402256810), (4, 201128405), (5, 160902724), (10, 80451362), (20, 40225681), (991, 811820), (1982, 405910), (3964, 202955), (4955, 162364), (9910, 81182), (19820, 40591)]