20317115

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6379}}^1$

素因数の和:6411

約数の個数: 24

約数和(自身を含む): 30547440

約数和(自身を除く): 10230325

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 6379, 31895, 44653, 82927, 223265, 312571, 414635, 580489, 1562855, 2902445, 4063423, 20317115]

約数ペア:

[(1, 20317115), (5, 4063423), (7, 2902445), (13, 1562855), (35, 580489), (49, 414635), (65, 312571), (91, 223265), (245, 82927), (455, 44653), (637, 31895), (3185, 6379)]