20794678

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{571}}^1$

素因数の和:843

約数の個数: 16

約数和(自身を含む): 31711680

約数和(自身を除く): 10917002

約数列:

[1, 2, 131, 139, 262, 278, 571, 1142, 18209, 36418, 74801, 79369, 149602, 158738, 10397339, 20794678]

約数ペア:

[(1, 20794678), (2, 10397339), (131, 158738), (139, 149602), (262, 79369), (278, 74801), (571, 36418), (1142, 18209)]