20008400

素因数分解:

$2^4\times 5^2\times {\mathrm{50021}}^1$

素因数の和:50039

約数の個数: 30

約数和(自身を含む): 48071142

約数和(自身を除く): 28062742

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 50021, 100042, 200084, 250105, 400168, 500210, 800336, 1000420, 1250525, 2000840, 2501050, 4001680, 5002100, 10004200, 20008400]

約数ペア:

[(1, 20008400), (2, 10004200), (4, 5002100), (5, 4001680), (8, 2501050), (10, 2000840), (16, 1250525), (20, 1000420), (25, 800336), (40, 500210), (50, 400168), (80, 250105), (100, 200084), (200, 100042), (400, 50021)]