30690775

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{199}}^2$

素因数の和:439

約数の個数: 18

約数和(自身を含む): 39482592

約数和(自身を除く): 8791817

約数列:

[1, 5, 25, 31, 155, 199, 775, 995, 4975, 6169, 30845, 39601, 154225, 198005, 990025, 1227631, 6138155, 30690775]

約数ペア:

[(1, 30690775), (5, 6138155), (25, 1227631), (31, 990025), (155, 198005), (199, 154225), (775, 39601), (995, 30845), (4975, 6169)]