199648420

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{22739}}^1$

素因数の和:23187

約数の個数: 24

約数和(自身を含む): 420235200

約数和(自身を除く): 220586780

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780, 22739, 45478, 90956, 113695, 227390, 454780, 9982421, 19964842, 39929684, 49912105, 99824210, 199648420]

約数ペア:

[(1, 199648420), (2, 99824210), (4, 49912105), (5, 39929684), (10, 19964842), (20, 9982421), (439, 454780), (878, 227390), (1756, 113695), (2195, 90956), (4390, 45478), (8780, 22739)]