81716020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{51719}}^1$

素因数の和:51807

約数の個数: 24

約数和(自身を含む): 173779200

約数和(自身を除く): 92063180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 51719, 103438, 206876, 258595, 517190, 1034380, 4085801, 8171602, 16343204, 20429005, 40858010, 81716020]

約数ペア:

[(1, 81716020), (2, 40858010), (4, 20429005), (5, 16343204), (10, 8171602), (20, 4085801), (79, 1034380), (158, 517190), (316, 258595), (395, 206876), (790, 103438), (1580, 51719)]