28396809

素因数分解:

$3^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{701}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 47017152

約数和(自身を除く): 18620343

約数列:

[1, 3, 7, 9, 21, 63, 643, 701, 1929, 2103, 4501, 4907, 5787, 6309, 13503, 14721, 40509, 44163, 450743, 1352229, 3155201, 4056687, 9465603, 28396809]

約数ペア:

[(1, 28396809), (3, 9465603), (7, 4056687), (9, 3155201), (21, 1352229), (63, 450743), (643, 44163), (701, 40509), (1929, 14721), (2103, 13503), (4501, 6309), (4907, 5787)]