1980621

素因数分解:

$3^2\times {\mathrm{31}}^2\times {\mathrm{229}}^1$

素因数の和:297

約数の個数: 18

約数和(自身を含む): 2969070

約数和(自身を除く): 988449

約数列:

[1, 3, 9, 31, 93, 229, 279, 687, 961, 2061, 2883, 7099, 8649, 21297, 63891, 220069, 660207, 1980621]

約数ペア:

[(1, 1980621), (3, 660207), (9, 220069), (31, 63891), (93, 21297), (229, 8649), (279, 7099), (687, 2883), (961, 2061)]