21886415

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1\times {\mathrm{443}}^1$

素因数の和:730

約数の個数: 16

約数和(自身を含む): 27076896

約数和(自身を除く): 5190481

約数列:

[1, 5, 41, 205, 241, 443, 1205, 2215, 9881, 18163, 49405, 90815, 106763, 533815, 4377283, 21886415]

約数ペア:

[(1, 21886415), (5, 4377283), (41, 533815), (205, 106763), (241, 90815), (443, 49405), (1205, 18163), (2215, 9881)]