12871240

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{2131}}^1$

素因数の和:2293

約数の個数: 32

約数和(自身を含む): 29165760

約数和(自身を除く): 16294520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 2131, 3020, 4262, 6040, 8524, 10655, 17048, 21310, 42620, 85240, 321781, 643562, 1287124, 1608905, 2574248, 3217810, 6435620, 12871240]

約数ペア:

[(1, 12871240), (2, 6435620), (4, 3217810), (5, 2574248), (8, 1608905), (10, 1287124), (20, 643562), (40, 321781), (151, 85240), (302, 42620), (604, 21310), (755, 17048), (1208, 10655), (1510, 8524), (2131, 6040), (3020, 4262)]