18907985

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{613}}^1$

素因数の和:848

約数の個数: 16

約数和(自身を含む): 23577600

約数和(自身を除く): 4669615

約数列:

[1, 5, 31, 155, 199, 613, 995, 3065, 6169, 19003, 30845, 95015, 121987, 609935, 3781597, 18907985]

約数ペア:

[(1, 18907985), (5, 3781597), (31, 609935), (155, 121987), (199, 95015), (613, 30845), (995, 19003), (3065, 6169)]