18716945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1447}}^1$

素因数の和:1664

約数の個数: 16

約数和(自身を含む): 24326400

約数和(自身を除く): 5609455

約数列:

[1, 5, 13, 65, 199, 995, 1447, 2587, 7235, 12935, 18811, 94055, 287953, 1439765, 3743389, 18716945]

約数ペア:

[(1, 18716945), (5, 3743389), (13, 1439765), (65, 287953), (199, 94055), (995, 18811), (1447, 12935), (2587, 7235)]