20510120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26987}}^1$

素因数の和:27017

約数の個数: 32

約数和(自身を含む): 48578400

約数和(自身を除く): 28068280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26987, 53974, 107948, 134935, 215896, 269870, 512753, 539740, 1025506, 1079480, 2051012, 2563765, 4102024, 5127530, 10255060, 20510120]

約数ペア:

[(1, 20510120), (2, 10255060), (4, 5127530), (5, 4102024), (8, 2563765), (10, 2051012), (19, 1079480), (20, 1025506), (38, 539740), (40, 512753), (76, 269870), (95, 215896), (152, 134935), (190, 107948), (380, 53974), (760, 26987)]