28129959

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1987}}^1$

素因数の和:2028

約数の個数: 36

約数和(自身を含む): 48121528

約数和(自身を除く): 19991569

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 121, 143, 363, 429, 1089, 1287, 1573, 1987, 4719, 5961, 14157, 17883, 21857, 25831, 65571, 77493, 196713, 232479, 240427, 284141, 721281, 852423, 2163843, 2557269, 3125551, 9376653, 28129959]

約数ペア:

[(1, 28129959), (3, 9376653), (9, 3125551), (11, 2557269), (13, 2163843), (33, 852423), (39, 721281), (99, 284141), (117, 240427), (121, 232479), (143, 196713), (363, 77493), (429, 65571), (1089, 25831), (1287, 21857), (1573, 17883), (1987, 14157), (4719, 5961)]