204896840

素因数分解:

$2^3\times 5^1\times {\mathrm{5122421}}^1$

素因数の和:5122432

約数の個数: 16

約数和(自身を含む): 461017980

約数和(自身を除く): 256121140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5122421, 10244842, 20489684, 25612105, 40979368, 51224210, 102448420, 204896840]

約数ペア:

[(1, 204896840), (2, 102448420), (4, 51224210), (5, 40979368), (8, 25612105), (10, 20489684), (20, 10244842), (40, 5122421)]