20478609

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{4831}}^1$

素因数の和:4997

約数の個数: 16

約数和(自身を含む): 30538240

約数和(自身を除く): 10059631

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 4831, 14493, 43479, 130437, 758467, 2275401, 6826203, 20478609]

約数ペア:

[(1, 20478609), (3, 6826203), (9, 2275401), (27, 758467), (157, 130437), (471, 43479), (1413, 14493), (4239, 4831)]