18990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{211}}^1$

素因数の和:224

約数の個数: 24

約数和(自身を含む): 49608

約数和(自身を除く): 30618

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 211, 422, 633, 1055, 1266, 1899, 2110, 3165, 3798, 6330, 9495, 18990]

約数ペア:

[(1, 18990), (2, 9495), (3, 6330), (5, 3798), (6, 3165), (9, 2110), (10, 1899), (15, 1266), (18, 1055), (30, 633), (45, 422), (90, 211)]