8128580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21391}}^1$

素因数の和:21419

約数の個数: 24

約数和(自身を含む): 17969280

約数和(自身を除く): 9840700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 21391, 42782, 85564, 106955, 213910, 406429, 427820, 812858, 1625716, 2032145, 4064290, 8128580]

約数ペア:

[(1, 8128580), (2, 4064290), (4, 2032145), (5, 1625716), (10, 812858), (19, 427820), (20, 406429), (38, 213910), (76, 106955), (95, 85564), (190, 42782), (380, 21391)]