28720671

素因数分解:

$3^1\times 7^1\times {\mathrm{701}}^1\times {\mathrm{1951}}^1$

素因数の和:2662

約数の個数: 16

約数和(自身を含む): 43849728

約数和(自身を除く): 15129057

約数列:

[1, 3, 7, 21, 701, 1951, 2103, 4907, 5853, 13657, 14721, 40971, 1367651, 4102953, 9573557, 28720671]

約数ペア:

[(1, 28720671), (3, 9573557), (7, 4102953), (21, 1367651), (701, 40971), (1951, 14721), (2103, 13657), (4907, 5853)]