19986555

素因数分解:

$3^1\times 5^1\times {\mathrm{823}}^1\times {\mathrm{1619}}^1$

素因数の和:2450

約数の個数: 16

約数和(自身を含む): 32037120

約数和(自身を除く): 12050565

約数列:

[1, 3, 5, 15, 823, 1619, 2469, 4115, 4857, 8095, 12345, 24285, 1332437, 3997311, 6662185, 19986555]

約数ペア:

[(1, 19986555), (3, 6662185), (5, 3997311), (15, 1332437), (823, 24285), (1619, 12345), (2469, 8095), (4115, 4857)]