21278946

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{272807}}^1$

素因数の和:272825

約数の個数: 16

約数和(自身を含む): 45831744

約数和(自身を除く): 24552798

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 272807, 545614, 818421, 1636842, 3546491, 7092982, 10639473, 21278946]

約数ペア:

[(1, 21278946), (2, 10639473), (3, 7092982), (6, 3546491), (13, 1636842), (26, 818421), (39, 545614), (78, 272807)]