72018040

素因数分解:

$2^3\times 5^1\times {\mathrm{1800451}}^1$

素因数の和:1800462

約数の個数: 16

約数和(自身を含む): 162040680

約数和(自身を除く): 90022640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1800451, 3600902, 7201804, 9002255, 14403608, 18004510, 36009020, 72018040]

約数ペア:

[(1, 72018040), (2, 36009020), (4, 18004510), (5, 14403608), (8, 9002255), (10, 7201804), (20, 3600902), (40, 1800451)]