18040240

素因数分解:

$2^4\times 5^1\times {\mathrm{225503}}^1$

素因数の和:225516

約数の個数: 20

約数和(自身を含む): 41943744

約数和(自身を除く): 23903504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 225503, 451006, 902012, 1127515, 1804024, 2255030, 3608048, 4510060, 9020120, 18040240]

約数ペア:

[(1, 18040240), (2, 9020120), (4, 4510060), (5, 3608048), (8, 2255030), (10, 1804024), (16, 1127515), (20, 902012), (40, 451006), (80, 225503)]