12999805

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28571}}^1$

素因数の和:28596

約数の個数: 16

約数和(自身を含む): 19200384

約数和(自身を除く): 6200579

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 28571, 142855, 199997, 371423, 999985, 1857115, 2599961, 12999805]

約数ペア:

[(1, 12999805), (5, 2599961), (7, 1857115), (13, 999985), (35, 371423), (65, 199997), (91, 142855), (455, 28571)]