20078205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4447}}^1$

素因数の和:4505

約数の個数: 32

約数和(自身を含む): 37576704

約数和(自身を除く): 17498499

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4447, 4515, 13341, 22235, 31129, 66705, 93387, 155645, 191221, 466935, 573663, 956105, 1338547, 2868315, 4015641, 6692735, 20078205]

約数ペア:

[(1, 20078205), (3, 6692735), (5, 4015641), (7, 2868315), (15, 1338547), (21, 956105), (35, 573663), (43, 466935), (105, 191221), (129, 155645), (215, 93387), (301, 66705), (645, 31129), (903, 22235), (1505, 13341), (4447, 4515)]