12981199

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{467}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 17117568

約数和(自身を除く): 4136369

約数列:

[1, 7, 11, 19, 77, 133, 209, 361, 467, 1463, 2527, 3269, 3971, 5137, 8873, 27797, 35959, 62111, 97603, 168587, 683221, 1180109, 1854457, 12981199]

約数ペア:

[(1, 12981199), (7, 1854457), (11, 1180109), (19, 683221), (77, 168587), (133, 97603), (209, 62111), (361, 35959), (467, 27797), (1463, 8873), (2527, 5137), (3269, 3971)]