80818580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{51151}}^1$

素因数の和:51239

約数の個数: 24

約数和(自身を含む): 171870720

約数和(自身を除く): 91052140

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 51151, 102302, 204604, 255755, 511510, 1023020, 4040929, 8081858, 16163716, 20204645, 40409290, 80818580]

約数ペア:

[(1, 80818580), (2, 40409290), (4, 20204645), (5, 16163716), (10, 8081858), (20, 4040929), (79, 1023020), (158, 511510), (316, 255755), (395, 204604), (790, 102302), (1580, 51151)]