19889915

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{1109}}^1$

素因数の和:1342

約数の個数: 16

約数和(自身を含む): 25414560

約数和(自身を除く): 5524645

約数列:

[1, 5, 17, 85, 211, 1055, 1109, 3587, 5545, 17935, 18853, 94265, 233999, 1169995, 3977983, 19889915]

約数ペア:

[(1, 19889915), (5, 3977983), (17, 1169995), (85, 233999), (211, 94265), (1055, 18853), (1109, 17935), (3587, 5545)]