20658800

素因数分解:

$2^4\times 5^2\times {\mathrm{51647}}^1$

素因数の和:51665

約数の個数: 30

約数和(自身を含む): 49633728

約数和(自身を除く): 28974928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51647, 103294, 206588, 258235, 413176, 516470, 826352, 1032940, 1291175, 2065880, 2582350, 4131760, 5164700, 10329400, 20658800]

約数ペア:

[(1, 20658800), (2, 10329400), (4, 5164700), (5, 4131760), (8, 2582350), (10, 2065880), (16, 1291175), (20, 1032940), (25, 826352), (40, 516470), (50, 413176), (80, 258235), (100, 206588), (200, 103294), (400, 51647)]