290460280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{660137}}^1$

素因数の和:660159

約数の個数: 32

約数和(自身を含む): 712949040

約数和(自身を除く): 422488760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 660137, 1320274, 2640548, 3300685, 5281096, 6601370, 7261507, 13202740, 14523014, 26405480, 29046028, 36307535, 58092056, 72615070, 145230140, 290460280]

約数ペア:

[(1, 290460280), (2, 145230140), (4, 72615070), (5, 58092056), (8, 36307535), (10, 29046028), (11, 26405480), (20, 14523014), (22, 13202740), (40, 7261507), (44, 6601370), (55, 5281096), (88, 3300685), (110, 2640548), (220, 1320274), (440, 660137)]