21147291

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{6473}}^1$

素因数の和:6504

約数の個数: 24

約数和(自身を含む): 34441680

約数和(自身を除く): 13294389

約数列:

[1, 3, 9, 11, 27, 33, 99, 121, 297, 363, 1089, 3267, 6473, 19419, 58257, 71203, 174771, 213609, 640827, 783233, 1922481, 2349699, 7049097, 21147291]

約数ペア:

[(1, 21147291), (3, 7049097), (9, 2349699), (11, 1922481), (27, 783233), (33, 640827), (99, 213609), (121, 174771), (297, 71203), (363, 58257), (1089, 19419), (3267, 6473)]