19801185

素因数分解:

$3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2053}}^1$

素因数の和:2704

約数の個数: 16

約数和(自身を含む): 31746624

約数和(自身を除く): 11945439

約数列:

[1, 3, 5, 15, 643, 1929, 2053, 3215, 6159, 9645, 10265, 30795, 1320079, 3960237, 6600395, 19801185]

約数ペア:

[(1, 19801185), (3, 6600395), (5, 3960237), (15, 1320079), (643, 30795), (1929, 10265), (2053, 9645), (3215, 6159)]