21396906

素因数分解:

$2^1\times 3^3\times {\mathrm{396239}}^1$

素因数の和:396250

約数の個数: 16

約数和(自身を含む): 47548800

約数和(自身を除く): 26151894

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 396239, 792478, 1188717, 2377434, 3566151, 7132302, 10698453, 21396906]

約数ペア:

[(1, 21396906), (2, 10698453), (3, 7132302), (6, 3566151), (9, 2377434), (18, 1188717), (27, 792478), (54, 396239)]