142940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1021}}^1$

素因数の和:1037

約数の個数: 24

約数和(自身を含む): 343392

約数和(自身を除く): 200452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1021, 2042, 4084, 5105, 7147, 10210, 14294, 20420, 28588, 35735, 71470, 142940]

約数ペア:

[(1, 142940), (2, 71470), (4, 35735), (5, 28588), (7, 20420), (10, 14294), (14, 10210), (20, 7147), (28, 5105), (35, 4084), (70, 2042), (140, 1021)]