21615945

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8527}}^1$

素因数の和:8561

約数の個数: 24

約数和(自身を含む): 37454976

約数和(自身を除く): 15839031

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8527, 25581, 42635, 110851, 127905, 332553, 554255, 1441063, 1662765, 4323189, 7205315, 21615945]

約数ペア:

[(1, 21615945), (3, 7205315), (5, 4323189), (13, 1662765), (15, 1441063), (39, 554255), (65, 332553), (169, 127905), (195, 110851), (507, 42635), (845, 25581), (2535, 8527)]