18911790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{210131}}^1$

素因数の和:210144

約数の個数: 24

約数和(自身を含む): 49170888

約数和(自身を除く): 30259098

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 210131, 420262, 630393, 1050655, 1260786, 1891179, 2101310, 3151965, 3782358, 6303930, 9455895, 18911790]

約数ペア:

[(1, 18911790), (2, 9455895), (3, 6303930), (5, 3782358), (6, 3151965), (9, 2101310), (10, 1891179), (15, 1260786), (18, 1050655), (30, 630393), (45, 420262), (90, 210131)]