18780625

素因数分解:

$5^4\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:370

約数の個数: 20

約数和(自身を含む): 23742400

約数和(自身を除く): 4961775

約数列:

[1, 5, 25, 125, 151, 199, 625, 755, 995, 3775, 4975, 18875, 24875, 30049, 94375, 124375, 150245, 751225, 3756125, 18780625]

約数ペア:

[(1, 18780625), (5, 3756125), (25, 751225), (125, 150245), (151, 124375), (199, 94375), (625, 30049), (755, 24875), (995, 18875), (3775, 4975)]