20905465

素因数分解:

$5^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{1307}}^1$

素因数の和:1776

約数の個数: 16

約数和(自身を含む): 28755072

約数和(自身を除く): 7849607

約数列:

[1, 5, 7, 35, 457, 1307, 2285, 3199, 6535, 9149, 15995, 45745, 597299, 2986495, 4181093, 20905465]

約数ペア:

[(1, 20905465), (5, 4181093), (7, 2986495), (35, 597299), (457, 45745), (1307, 15995), (2285, 9149), (3199, 6535)]