28978521

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2179}}^1$

素因数の和:2237

約数の個数: 32

約数和(自身を含む): 46878720

約数和(自身を除く): 17900199

約数列:

[1, 3, 11, 13, 31, 33, 39, 93, 143, 341, 403, 429, 1023, 1209, 2179, 4433, 6537, 13299, 23969, 28327, 67549, 71907, 84981, 202647, 311597, 743039, 878137, 934791, 2229117, 2634411, 9659507, 28978521]

約数ペア:

[(1, 28978521), (3, 9659507), (11, 2634411), (13, 2229117), (31, 934791), (33, 878137), (39, 743039), (93, 311597), (143, 202647), (341, 84981), (403, 71907), (429, 67549), (1023, 28327), (1209, 23969), (2179, 13299), (4433, 6537)]