28339960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2221}}^1$

素因数の和:2272

約数の個数: 64

約数和(自身を含む): 71992800

約数和(自身を除く): 43652840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1595, 2221, 2552, 3190, 4442, 6380, 8884, 11105, 12760, 17768, 22210, 24431, 44420, 48862, 64409, 88840, 97724, 122155, 128818, 195448, 244310, 257636, 322045, 488620, 515272, 644090, 708499, 977240, 1288180, 1416998, 2576360, 2833996, 3542495, 5667992, 7084990, 14169980, 28339960]

約数ペア:

[(1, 28339960), (2, 14169980), (4, 7084990), (5, 5667992), (8, 3542495), (10, 2833996), (11, 2576360), (20, 1416998), (22, 1288180), (29, 977240), (40, 708499), (44, 644090), (55, 515272), (58, 488620), (88, 322045), (110, 257636), (116, 244310), (145, 195448), (220, 128818), (232, 122155), (290, 97724), (319, 88840), (440, 64409), (580, 48862), (638, 44420), (1160, 24431), (1276, 22210), (1595, 17768), (2221, 12760), (2552, 11105), (3190, 8884), (4442, 6380)]