78195620

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{21601}}^1$

素因数の和:21791

約数の個数: 24

約数和(自身を含む): 165125688

約数和(自身を除く): 86930068

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 21601, 43202, 86404, 108005, 216010, 432020, 3909781, 7819562, 15639124, 19548905, 39097810, 78195620]

約数ペア:

[(1, 78195620), (2, 39097810), (4, 19548905), (5, 15639124), (10, 7819562), (20, 3909781), (181, 432020), (362, 216010), (724, 108005), (905, 86404), (1810, 43202), (3620, 21601)]