28207767

素因数分解:

$3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{2089}}^1$

素因数の和:2742

約数の個数: 16

約数和(自身を含む): 43070720

約数和(自身を除く): 14862953

約数列:

[1, 3, 7, 21, 643, 1929, 2089, 4501, 6267, 13503, 14623, 43869, 1343227, 4029681, 9402589, 28207767]

約数ペア:

[(1, 28207767), (3, 9402589), (7, 4029681), (21, 1343227), (643, 43869), (1929, 14623), (2089, 13503), (4501, 6267)]