18720216

素因数分解:

$2^3\times 3^2\times {\mathrm{260003}}^1$

素因数の和:260015

約数の個数: 24

約数和(自身を含む): 50700780

約数和(自身を除く): 31980564

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 260003, 520006, 780009, 1040012, 1560018, 2080024, 2340027, 3120036, 4680054, 6240072, 9360108, 18720216]

約数ペア:

[(1, 18720216), (2, 9360108), (3, 6240072), (4, 4680054), (6, 3120036), (8, 2340027), (9, 2080024), (12, 1560018), (18, 1040012), (24, 780009), (36, 520006), (72, 260003)]