20368205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{467}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 29248128

約数和(自身を除く): 8879923

約数列:

[1, 5, 11, 13, 55, 61, 65, 143, 305, 467, 671, 715, 793, 2335, 3355, 3965, 5137, 6071, 8723, 25685, 28487, 30355, 43615, 66781, 142435, 313357, 333905, 370331, 1566785, 1851655, 4073641, 20368205]

約数ペア:

[(1, 20368205), (5, 4073641), (11, 1851655), (13, 1566785), (55, 370331), (61, 333905), (65, 313357), (143, 142435), (305, 66781), (467, 43615), (671, 30355), (715, 28487), (793, 25685), (2335, 8723), (3355, 6071), (3965, 5137)]