19939545

素因数分解:

$3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1987}}^1$

素因数の和:2221

約数の個数: 24

約数和(自身を含む): 34734336

約数和(自身を除く): 14794791

約数列:

[1, 3, 5, 9, 15, 45, 223, 669, 1115, 1987, 2007, 3345, 5961, 9935, 10035, 17883, 29805, 89415, 443101, 1329303, 2215505, 3987909, 6646515, 19939545]

約数ペア:

[(1, 19939545), (3, 6646515), (5, 3987909), (9, 2215505), (15, 1329303), (45, 443101), (223, 89415), (669, 29805), (1115, 17883), (1987, 10035), (2007, 9935), (3345, 5961)]