21403347472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102900709}}^1$

素因数の和:102900730

約数の個数: 20

約数和(自身を含む): 44658908140

約数和(自身を除く): 23255560668

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102900709, 205801418, 411602836, 823205672, 1337709217, 1646411344, 2675418434, 5350836868, 10701673736, 21403347472]

約数ペア:

[(1, 21403347472), (2, 10701673736), (4, 5350836868), (8, 2675418434), (13, 1646411344), (16, 1337709217), (26, 823205672), (52, 411602836), (104, 205801418), (208, 102900709)]