28558881

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{443}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 48484800

約数和(自身を除く): 19925919

約数列:

[1, 3, 9, 13, 19, 29, 39, 57, 87, 117, 171, 247, 261, 377, 443, 551, 741, 1131, 1329, 1653, 2223, 3393, 3987, 4959, 5759, 7163, 8417, 12847, 17277, 21489, 25251, 38541, 51831, 64467, 75753, 109421, 115623, 167011, 244093, 328263, 501033, 732279, 984789, 1503099, 2196837, 3173209, 9519627, 28558881]

約数ペア:

[(1, 28558881), (3, 9519627), (9, 3173209), (13, 2196837), (19, 1503099), (29, 984789), (39, 732279), (57, 501033), (87, 328263), (117, 244093), (171, 167011), (247, 115623), (261, 109421), (377, 75753), (443, 64467), (551, 51831), (741, 38541), (1131, 25251), (1329, 21489), (1653, 17277), (2223, 12847), (3393, 8417), (3987, 7163), (4959, 5759)]