28721043

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:876

約数の個数: 36

約数和(自身を含む): 46932912

約数和(自身を除く): 18211869

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 169, 207, 299, 507, 821, 897, 1521, 2463, 2691, 3887, 7389, 10673, 11661, 18883, 32019, 34983, 56649, 96057, 138749, 169947, 245479, 416247, 736437, 1248741, 2209311, 3191227, 9573681, 28721043]

約数ペア:

[(1, 28721043), (3, 9573681), (9, 3191227), (13, 2209311), (23, 1248741), (39, 736437), (69, 416247), (117, 245479), (169, 169947), (207, 138749), (299, 96057), (507, 56649), (821, 34983), (897, 32019), (1521, 18883), (2463, 11661), (2691, 10673), (3887, 7389)]