28979613

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 60

約数和(自身を含む): 49157460

約数和(自身を除く): 20177847

約数列:

[1, 3, 9, 13, 27, 29, 39, 73, 81, 87, 117, 169, 219, 261, 351, 377, 507, 657, 783, 949, 1053, 1131, 1521, 1971, 2117, 2349, 2847, 3393, 4563, 4901, 5913, 6351, 8541, 10179, 12337, 13689, 14703, 19053, 25623, 27521, 30537, 37011, 44109, 57159, 76869, 82563, 111033, 132327, 171477, 247689, 333099, 357773, 396981, 743067, 999297, 1073319, 2229201, 3219957, 9659871, 28979613]

約数ペア:

[(1, 28979613), (3, 9659871), (9, 3219957), (13, 2229201), (27, 1073319), (29, 999297), (39, 743067), (73, 396981), (81, 357773), (87, 333099), (117, 247689), (169, 171477), (219, 132327), (261, 111033), (351, 82563), (377, 76869), (507, 57159), (657, 44109), (783, 37011), (949, 30537), (1053, 27521), (1131, 25623), (1521, 19053), (1971, 14703), (2117, 13689), (2349, 12337), (2847, 10179), (3393, 8541), (4563, 6351), (4901, 5913)]