20980250

素因数分解:

$2^1\times 5^3\times {\mathrm{83921}}^1$

素因数の和:83938

約数の個数: 16

約数和(自身を含む): 39275496

約数和(自身を除く): 18295246

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 83921, 167842, 419605, 839210, 2098025, 4196050, 10490125, 20980250]

約数ペア:

[(1, 20980250), (2, 10490125), (5, 4196050), (10, 2098025), (25, 839210), (50, 419605), (125, 167842), (250, 83921)]