40574540

素因数分解:

$2^2\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{1987}}^1$

素因数の和:3017

約数の個数: 24

約数和(自身を含む): 85332912

約数和(自身を除く): 44758372

約数列:

[1, 2, 4, 5, 10, 20, 1021, 1987, 2042, 3974, 4084, 5105, 7948, 9935, 10210, 19870, 20420, 39740, 2028727, 4057454, 8114908, 10143635, 20287270, 40574540]

約数ペア:

[(1, 40574540), (2, 20287270), (4, 10143635), (5, 8114908), (10, 4057454), (20, 2028727), (1021, 39740), (1987, 20420), (2042, 19870), (3974, 10210), (4084, 9935), (5105, 7948)]