18210440

素因数分解:

$2^3\times 5^1\times {\mathrm{455261}}^1$

素因数の和:455272

約数の個数: 16

約数和(自身を含む): 40973580

約数和(自身を除く): 22763140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 455261, 910522, 1821044, 2276305, 3642088, 4552610, 9105220, 18210440]

約数ペア:

[(1, 18210440), (2, 9105220), (4, 4552610), (5, 3642088), (8, 2276305), (10, 1821044), (20, 910522), (40, 455261)]