20650100

素因数分解:

$2^2\times 5^2\times {\mathrm{206501}}^1$

素因数の和:206515

約数の個数: 18

約数和(自身を含む): 44810934

約数和(自身を除く): 24160834

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 206501, 413002, 826004, 1032505, 2065010, 4130020, 5162525, 10325050, 20650100]

約数ペア:

[(1, 20650100), (2, 10325050), (4, 5162525), (5, 4130020), (10, 2065010), (20, 1032505), (25, 826004), (50, 413002), (100, 206501)]