18720756

素因数分解:

$2^2\times 3^2\times {\mathrm{520021}}^1$

素因数の和:520031

約数の個数: 18

約数和(自身を含む): 47322002

約数和(自身を除く): 28601246

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 520021, 1040042, 1560063, 2080084, 3120126, 4680189, 6240252, 9360378, 18720756]

約数ペア:

[(1, 18720756), (2, 9360378), (3, 6240252), (4, 4680189), (6, 3120126), (9, 2080084), (12, 1560063), (18, 1040042), (36, 520021)]