21308045

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1621}}^1$

素因数の和:1876

約数の個数: 16

約数和(自身を含む): 28028160

約数和(自身を除く): 6720115

約数列:

[1, 5, 11, 55, 239, 1195, 1621, 2629, 8105, 13145, 17831, 89155, 387419, 1937095, 4261609, 21308045]

約数ペア:

[(1, 21308045), (5, 4261609), (11, 1937095), (55, 387419), (239, 89155), (1195, 17831), (1621, 13145), (2629, 8105)]