20563749

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{1669}}^1$

素因数の和:1749

約数の個数: 18

約数和(自身を含む): 30545970

約数和(自身を除く): 9982221

約数列:

[1, 3, 9, 37, 111, 333, 1369, 1669, 4107, 5007, 12321, 15021, 61753, 185259, 555777, 2284861, 6854583, 20563749]

約数ペア:

[(1, 20563749), (3, 6854583), (9, 2284861), (37, 555777), (111, 185259), (333, 61753), (1369, 15021), (1669, 12321), (4107, 5007)]