21196903

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2137}}^1$

素因数の和:2266

約数の個数: 16

約数和(自身を含む): 26340160

約数和(自身を除く): 5143257

約数列:

[1, 7, 13, 91, 109, 763, 1417, 2137, 9919, 14959, 27781, 194467, 232933, 1630531, 3028129, 21196903]

約数ペア:

[(1, 21196903), (7, 3028129), (13, 1630531), (91, 232933), (109, 194467), (763, 27781), (1417, 14959), (2137, 9919)]