21184659

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6379}}^1$

素因数の和:6432

約数の個数: 20

約数和(自身を含む): 32423160

約数和(自身を除く): 11238501

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6379, 19137, 57411, 172233, 261539, 516699, 784617, 2353851, 7061553, 21184659]

約数ペア:

[(1, 21184659), (3, 7061553), (9, 2353851), (27, 784617), (41, 516699), (81, 261539), (123, 172233), (369, 57411), (1107, 19137), (3321, 6379)]