21006867

素因数分解:

$3^1\times 7^1\times {\mathrm{701}}^1\times {\mathrm{1427}}^1$

素因数の和:2138

約数の個数: 16

約数和(自身を含む): 32078592

約数和(自身を除く): 11071725

約数列:

[1, 3, 7, 21, 701, 1427, 2103, 4281, 4907, 9989, 14721, 29967, 1000327, 3000981, 7002289, 21006867]

約数ペア:

[(1, 21006867), (3, 7002289), (7, 3000981), (21, 1000327), (701, 29967), (1427, 14721), (2103, 9989), (4281, 4907)]