12947991

素因数分解:

$3^1\times 7^1\times {\mathrm{751}}^1\times {\mathrm{821}}^1$

素因数の和:1582

約数の個数: 16

約数和(自身を含む): 19780608

約数和(自身を除く): 6832617

約数列:

[1, 3, 7, 21, 751, 821, 2253, 2463, 5257, 5747, 15771, 17241, 616571, 1849713, 4315997, 12947991]

約数ペア:

[(1, 12947991), (3, 4315997), (7, 1849713), (21, 616571), (751, 17241), (821, 15771), (2253, 5747), (2463, 5257)]