90890721

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2789}}^1$

素因数の和:2886

約数の個数: 32

約数和(自身を含む): 144633600

約数和(自身を除く): 53742879

約数列:

[1, 3, 9, 17, 27, 51, 71, 153, 213, 459, 639, 1207, 1917, 2789, 3621, 8367, 10863, 25101, 32589, 47413, 75303, 142239, 198019, 426717, 594057, 1280151, 1782171, 3366323, 5346513, 10098969, 30296907, 90890721]

約数ペア:

[(1, 90890721), (3, 30296907), (9, 10098969), (17, 5346513), (27, 3366323), (51, 1782171), (71, 1280151), (153, 594057), (213, 426717), (459, 198019), (639, 142239), (1207, 75303), (1917, 47413), (2789, 32589), (3621, 25101), (8367, 10863)]