28878993

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1181}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 51629760

約数和(自身を除く): 22750767

約数列:

[1, 3, 9, 11, 13, 19, 33, 39, 57, 99, 117, 143, 171, 209, 247, 429, 627, 741, 1181, 1287, 1881, 2223, 2717, 3543, 8151, 10629, 12991, 15353, 22439, 24453, 38973, 46059, 67317, 116919, 138177, 168883, 201951, 246829, 291707, 506649, 740487, 875121, 1519947, 2221461, 2625363, 3208777, 9626331, 28878993]

約数ペア:

[(1, 28878993), (3, 9626331), (9, 3208777), (11, 2625363), (13, 2221461), (19, 1519947), (33, 875121), (39, 740487), (57, 506649), (99, 291707), (117, 246829), (143, 201951), (171, 168883), (209, 138177), (247, 116919), (429, 67317), (627, 46059), (741, 38973), (1181, 24453), (1287, 22439), (1881, 15353), (2223, 12991), (2717, 10629), (3543, 8151)]