81557297275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{1523}}^1\times {\mathrm{126001}}^1$

素因数の和:127551

約数の個数: 24

約数和(自身を含む): 107151092784

約数和(自身を除く): 25593795509

約数列:

[1, 5, 17, 25, 85, 425, 1523, 7615, 25891, 38075, 126001, 129455, 630005, 647275, 2142017, 3150025, 10710085, 53550425, 191899523, 959497615, 3262291891, 4797488075, 16311459455, 81557297275]

約数ペア:

[(1, 81557297275), (5, 16311459455), (17, 4797488075), (25, 3262291891), (85, 959497615), (425, 191899523), (1523, 53550425), (7615, 10710085), (25891, 3150025), (38075, 2142017), (126001, 647275), (129455, 630005)]