21243654

素因数分解:

$2^1\times 3^3\times {\mathrm{393401}}^1$

素因数の和:393412

約数の個数: 16

約数和(自身を含む): 47208240

約数和(自身を除く): 25964586

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393401, 786802, 1180203, 2360406, 3540609, 7081218, 10621827, 21243654]

約数ペア:

[(1, 21243654), (2, 10621827), (3, 7081218), (6, 3540609), (9, 2360406), (18, 1180203), (27, 786802), (54, 393401)]