8002100

素因数分解:

$2^2\times 5^2\times {\mathrm{80021}}^1$

素因数の和:80035

約数の個数: 18

約数和(自身を含む): 17364774

約数和(自身を除く): 9362674

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 80021, 160042, 320084, 400105, 800210, 1600420, 2000525, 4001050, 8002100]

約数ペア:

[(1, 8002100), (2, 4001050), (4, 2000525), (5, 1600420), (10, 800210), (20, 400105), (25, 320084), (50, 160042), (100, 80021)]