18000440

素因数分解:

$2^3\times 5^1\times {\mathrm{450011}}^1$

素因数の和:450022

約数の個数: 16

約数和(自身を含む): 40501080

約数和(自身を除く): 22500640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450011, 900022, 1800044, 2250055, 3600088, 4500110, 9000220, 18000440]

約数ペア:

[(1, 18000440), (2, 9000220), (4, 4500110), (5, 3600088), (8, 2250055), (10, 1800044), (20, 900022), (40, 450011)]