18900990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{210011}}^1$

素因数の和:210024

約数の個数: 24

約数和(自身を含む): 49142808

約数和(自身を除く): 30241818

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 210011, 420022, 630033, 1050055, 1260066, 1890099, 2100110, 3150165, 3780198, 6300330, 9450495, 18900990]

約数ペア:

[(1, 18900990), (2, 9450495), (3, 6300330), (5, 3780198), (6, 3150165), (9, 2100110), (10, 1890099), (15, 1260066), (18, 1050055), (30, 630033), (45, 420022), (90, 210011)]