19990375

素因数分解:

$5^3\times {\mathrm{19}}^2\times {\mathrm{443}}^1$

素因数の和:496

約数の個数: 24

約数和(自身を含む): 26389584

約数和(自身を除く): 6399209

約数列:

[1, 5, 19, 25, 95, 125, 361, 443, 475, 1805, 2215, 2375, 8417, 9025, 11075, 42085, 45125, 55375, 159923, 210425, 799615, 1052125, 3998075, 19990375]

約数ペア:

[(1, 19990375), (5, 3998075), (19, 1052125), (25, 799615), (95, 210425), (125, 159923), (361, 55375), (443, 45125), (475, 42085), (1805, 11075), (2215, 9025), (2375, 8417)]