20890120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27487}}^1$

素因数の和:27517

約数の個数: 32

約数和(自身を含む): 49478400

約数和(自身を除く): 28588280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27487, 54974, 109948, 137435, 219896, 274870, 522253, 549740, 1044506, 1099480, 2089012, 2611265, 4178024, 5222530, 10445060, 20890120]

約数ペア:

[(1, 20890120), (2, 10445060), (4, 5222530), (5, 4178024), (8, 2611265), (10, 2089012), (19, 1099480), (20, 1044506), (38, 549740), (40, 522253), (76, 274870), (95, 219896), (152, 137435), (190, 109948), (380, 54974), (760, 27487)]