21286659

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1\times {\mathrm{431}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 28905984

約数和(自身を除く): 7619325

約数列:

[1, 3, 101, 163, 303, 431, 489, 1293, 16463, 43531, 49389, 70253, 130593, 210759, 7095553, 21286659]

約数ペア:

[(1, 21286659), (3, 7095553), (101, 210759), (163, 130593), (303, 70253), (431, 49389), (489, 43531), (1293, 16463)]