17920705

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1559}}^1$

素因数の和:1605

約数の個数: 24

約数和(自身を含む): 24897600

約数和(自身を除く): 6976895

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1559, 2299, 7795, 11495, 17149, 29621, 85745, 148105, 188639, 325831, 943195, 1629155, 3584141, 17920705]

約数ペア:

[(1, 17920705), (5, 3584141), (11, 1629155), (19, 943195), (55, 325831), (95, 188639), (121, 148105), (209, 85745), (605, 29621), (1045, 17149), (1559, 11495), (2299, 7795)]