137745980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{87181}}^1$

素因数の和:87269

約数の個数: 24

約数和(自身を含む): 292931520

約数和(自身を除く): 155185540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 87181, 174362, 348724, 435905, 871810, 1743620, 6887299, 13774598, 27549196, 34436495, 68872990, 137745980]

約数ペア:

[(1, 137745980), (2, 68872990), (4, 34436495), (5, 27549196), (10, 13774598), (20, 6887299), (79, 1743620), (158, 871810), (316, 435905), (395, 348724), (790, 174362), (1580, 87181)]