12686840

素因数分解:

$2^3\times 5^1\times {\mathrm{317171}}^1$

素因数の和:317182

約数の個数: 16

約数和(自身を含む): 28545480

約数和(自身を除く): 15858640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317171, 634342, 1268684, 1585855, 2537368, 3171710, 6343420, 12686840]

約数ペア:

[(1, 12686840), (2, 6343420), (4, 3171710), (5, 2537368), (8, 1585855), (10, 1268684), (20, 634342), (40, 317171)]