28782819

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 49140000

約数和(自身を除く): 20357181

約数列:

[1, 3, 9, 13, 17, 29, 39, 51, 87, 117, 153, 221, 261, 377, 493, 499, 663, 1131, 1479, 1497, 1989, 3393, 4437, 4491, 6409, 6487, 8483, 14471, 19227, 19461, 25449, 43413, 57681, 58383, 76347, 110279, 130239, 188123, 246007, 330837, 564369, 738021, 992511, 1693107, 2214063, 3198091, 9594273, 28782819]

約数ペア:

[(1, 28782819), (3, 9594273), (9, 3198091), (13, 2214063), (17, 1693107), (29, 992511), (39, 738021), (51, 564369), (87, 330837), (117, 246007), (153, 188123), (221, 130239), (261, 110279), (377, 76347), (493, 58383), (499, 57681), (663, 43413), (1131, 25449), (1479, 19461), (1497, 19227), (1989, 14471), (3393, 8483), (4437, 6487), (4491, 6409)]