19904943

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{1409}}^1$

素因数の和:1706

約数の個数: 16

約数和(自身を含む): 28222560

約数和(自身を除く): 8317617

約数列:

[1, 3, 17, 51, 277, 831, 1409, 4227, 4709, 14127, 23953, 71859, 390293, 1170879, 6634981, 19904943]

約数ペア:

[(1, 19904943), (3, 6634981), (17, 1170879), (51, 390293), (277, 71859), (831, 23953), (1409, 14127), (4227, 4709)]