12399905

素因数分解:

$5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1279}}^1$

素因数の和:1568

約数の個数: 16

約数和(自身を含む): 17080320

約数和(自身を除く): 4680415

約数列:

[1, 5, 7, 35, 277, 1279, 1385, 1939, 6395, 8953, 9695, 44765, 354283, 1771415, 2479981, 12399905]

約数ペア:

[(1, 12399905), (5, 2479981), (7, 1771415), (35, 354283), (277, 44765), (1279, 9695), (1385, 8953), (1939, 6395)]