40819580

素因数分解:

$2^2\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{1999}}^1$

素因数の和:3029

約数の個数: 24

約数和(自身を含む): 85848000

約数和(自身を除く): 45028420

約数列:

[1, 2, 4, 5, 10, 20, 1021, 1999, 2042, 3998, 4084, 5105, 7996, 9995, 10210, 19990, 20420, 39980, 2040979, 4081958, 8163916, 10204895, 20409790, 40819580]

約数ペア:

[(1, 40819580), (2, 20409790), (4, 10204895), (5, 8163916), (10, 4081958), (20, 2040979), (1021, 39980), (1999, 20420), (2042, 19990), (3998, 10210), (4084, 9995), (5105, 7996)]