247155640

素因数分解:

$2^3\times 5^1\times {\mathrm{6178891}}^1$

素因数の和:6178902

約数の個数: 16

約数和(自身を含む): 556100280

約数和(自身を除く): 308944640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6178891, 12357782, 24715564, 30894455, 49431128, 61788910, 123577820, 247155640]

約数ペア:

[(1, 247155640), (2, 123577820), (4, 61788910), (5, 49431128), (8, 30894455), (10, 24715564), (20, 12357782), (40, 6178891)]