81300455

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1\times {\mathrm{809}}^1$

素因数の和:1114

約数の個数: 16

約数和(自身を含む): 99144000

約数和(自身を除く): 17843545

約数列:

[1, 5, 101, 199, 505, 809, 995, 4045, 20099, 81709, 100495, 160991, 408545, 804955, 16260091, 81300455]

約数ペア:

[(1, 81300455), (5, 16260091), (101, 804955), (199, 408545), (505, 160991), (809, 100495), (995, 81709), (4045, 20099)]