3998075

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{443}}^1$

素因数の和:491

約数の個数: 18

約数和(自身を含む): 5244084

約数和(自身を除く): 1246009

約数列:

[1, 5, 19, 25, 95, 361, 443, 475, 1805, 2215, 8417, 9025, 11075, 42085, 159923, 210425, 799615, 3998075]

約数ペア:

[(1, 3998075), (5, 799615), (19, 210425), (25, 159923), (95, 42085), (361, 11075), (443, 9025), (475, 8417), (1805, 2215)]