78402140

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{8849}}^1$

素因数の和:9301

約数の個数: 24

約数和(自身を含む): 165034800

約数和(自身を除く): 86632660

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 4430, 8849, 8860, 17698, 35396, 44245, 88490, 176980, 3920107, 7840214, 15680428, 19600535, 39201070, 78402140]

約数ペア:

[(1, 78402140), (2, 39201070), (4, 19600535), (5, 15680428), (10, 7840214), (20, 3920107), (443, 176980), (886, 88490), (1772, 44245), (2215, 35396), (4430, 17698), (8849, 8860)]