28587699

素因数分解:

$3^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{1999}}^1$

素因数の和:2239

約数の個数: 24

約数和(自身を含む): 47424000

約数和(自身を除く): 18836301

約数列:

[1, 3, 7, 9, 21, 63, 227, 681, 1589, 1999, 2043, 4767, 5997, 13993, 14301, 17991, 41979, 125937, 453773, 1361319, 3176411, 4083957, 9529233, 28587699]

約数ペア:

[(1, 28587699), (3, 9529233), (7, 4083957), (9, 3176411), (21, 1361319), (63, 453773), (227, 125937), (681, 41979), (1589, 17991), (1999, 14301), (2043, 13993), (4767, 5997)]