21899927

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{2521}}^1$

素因数の和:2618

約数の個数: 16

約数和(自身を含む): 26874432

約数和(自身を除く): 4974505

約数列:

[1, 7, 17, 73, 119, 511, 1241, 2521, 8687, 17647, 42857, 184033, 299999, 1288231, 3128561, 21899927]

約数ペア:

[(1, 21899927), (7, 3128561), (17, 1288231), (73, 299999), (119, 184033), (511, 42857), (1241, 17647), (2521, 8687)]