20901950

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4139}}^1$

素因数の和:4252

約数の個数: 24

約数和(自身を含む): 39272040

約数和(自身を除く): 18370090

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4139, 5050, 8278, 20695, 41390, 103475, 206950, 418039, 836078, 2090195, 4180390, 10450975, 20901950]

約数ペア:

[(1, 20901950), (2, 10450975), (5, 4180390), (10, 2090195), (25, 836078), (50, 418039), (101, 206950), (202, 103475), (505, 41390), (1010, 20695), (2525, 8278), (4139, 5050)]