28357725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{929}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 52585920

約数和(自身を除く): 24228195

約数列:

[1, 3, 5, 11, 15, 25, 33, 37, 55, 75, 111, 165, 185, 275, 407, 555, 825, 925, 929, 1221, 2035, 2775, 2787, 4645, 6105, 10175, 10219, 13935, 23225, 30525, 30657, 34373, 51095, 69675, 103119, 153285, 171865, 255475, 378103, 515595, 766425, 859325, 1134309, 1890515, 2577975, 5671545, 9452575, 28357725]

約数ペア:

[(1, 28357725), (3, 9452575), (5, 5671545), (11, 2577975), (15, 1890515), (25, 1134309), (33, 859325), (37, 766425), (55, 515595), (75, 378103), (111, 255475), (165, 171865), (185, 153285), (275, 103119), (407, 69675), (555, 51095), (825, 34373), (925, 30657), (929, 30525), (1221, 23225), (2035, 13935), (2775, 10219), (2787, 10175), (4645, 6105)]