21287799

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{60649}}^1$

素因数の和:60671

約数の個数: 16

約数和(自身を含む): 33964000

約数和(自身を除く): 12676201

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 60649, 181947, 545841, 788437, 1637523, 2365311, 7095933, 21287799]

約数ペア:

[(1, 21287799), (3, 7095933), (9, 2365311), (13, 1637523), (27, 788437), (39, 545841), (117, 181947), (351, 60649)]