20406575

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4021}}^1$

素因数の和:4067

約数の個数: 24

約数和(自身を含む): 29923680

約数和(自身を除く): 9517105

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 4021, 5075, 20105, 28147, 100525, 116609, 140735, 583045, 703675, 816263, 2915225, 4081315, 20406575]

約数ペア:

[(1, 20406575), (5, 4081315), (7, 2915225), (25, 816263), (29, 703675), (35, 583045), (145, 140735), (175, 116609), (203, 100525), (725, 28147), (1015, 20105), (4021, 5075)]