21075620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13339}}^1$

素因数の和:13427

約数の個数: 24

約数和(自身を含む): 44822400

約数和(自身を除く): 23746780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13339, 26678, 53356, 66695, 133390, 266780, 1053781, 2107562, 4215124, 5268905, 10537810, 21075620]

約数ペア:

[(1, 21075620), (2, 10537810), (4, 5268905), (5, 4215124), (10, 2107562), (20, 1053781), (79, 266780), (158, 133390), (316, 66695), (395, 53356), (790, 26678), (1580, 13339)]