20405409

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1\times {\mathrm{701}}^1$

素因数の和:1048

約数の個数: 16

約数和(自身を含む): 28214784

約数和(自身を除く): 7809375

約数列:

[1, 3, 31, 93, 313, 701, 939, 2103, 9703, 21731, 29109, 65193, 219413, 658239, 6801803, 20405409]

約数ペア:

[(1, 20405409), (3, 6801803), (31, 658239), (93, 219413), (313, 65193), (701, 29109), (939, 21731), (2103, 9703)]