21552531

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7177}}^1$

素因数の和:7211

約数の個数: 32

約数和(自身を含む): 38588928

約数和(自身を除く): 17036397

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 7177, 21531, 50239, 78947, 93301, 150717, 236841, 279903, 552629, 653107, 1026311, 1657887, 1959321, 3078933, 7184177, 21552531]

約数ペア:

[(1, 21552531), (3, 7184177), (7, 3078933), (11, 1959321), (13, 1657887), (21, 1026311), (33, 653107), (39, 552629), (77, 279903), (91, 236841), (143, 150717), (231, 93301), (273, 78947), (429, 50239), (1001, 21531), (3003, 7177)]