28407897

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1741}}^1$

素因数の和:1798

約数の個数: 36

約数和(自身を含む): 49051236

約数和(自身を除く): 20643339

約数列:

[1, 3, 7, 9, 21, 37, 49, 63, 111, 147, 259, 333, 441, 777, 1741, 1813, 2331, 5223, 5439, 12187, 15669, 16317, 36561, 64417, 85309, 109683, 193251, 255927, 450919, 579753, 767781, 1352757, 3156433, 4058271, 9469299, 28407897]

約数ペア:

[(1, 28407897), (3, 9469299), (7, 4058271), (9, 3156433), (21, 1352757), (37, 767781), (49, 579753), (63, 450919), (111, 255927), (147, 193251), (259, 109683), (333, 85309), (441, 64417), (777, 36561), (1741, 16317), (1813, 15669), (2331, 12187), (5223, 5439)]