18418220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2551}}^1$

素因数の和:2598

約数の個数: 36

約数和(自身を含む): 40837104

約数和(自身を除く): 22418884

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2551, 3610, 5102, 7220, 10204, 12755, 25510, 48469, 51020, 96938, 193876, 242345, 484690, 920911, 969380, 1841822, 3683644, 4604555, 9209110, 18418220]

約数ペア:

[(1, 18418220), (2, 9209110), (4, 4604555), (5, 3683644), (10, 1841822), (19, 969380), (20, 920911), (38, 484690), (76, 242345), (95, 193876), (190, 96938), (361, 51020), (380, 48469), (722, 25510), (1444, 12755), (1805, 10204), (2551, 7220), (3610, 5102)]