19955505

素因数分解:

$3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2069}}^1$

素因数の和:2720

約数の個数: 16

約数和(自身を含む): 31993920

約数和(自身を除く): 12038415

約数列:

[1, 3, 5, 15, 643, 1929, 2069, 3215, 6207, 9645, 10345, 31035, 1330367, 3991101, 6651835, 19955505]

約数ペア:

[(1, 19955505), (3, 6651835), (5, 3991101), (15, 1330367), (643, 31035), (1929, 10345), (2069, 9645), (3215, 6207)]