205005280

素因数分解:

$2^5\times 5^1\times {\mathrm{1281283}}^1$

素因数の和:1281298

約数の個数: 24

約数和(自身を含む): 484325352

約数和(自身を除く): 279320072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1281283, 2562566, 5125132, 6406415, 10250264, 12812830, 20500528, 25625660, 41001056, 51251320, 102502640, 205005280]

約数ペア:

[(1, 205005280), (2, 102502640), (4, 51251320), (5, 41001056), (8, 25625660), (10, 20500528), (16, 12812830), (20, 10250264), (32, 6406415), (40, 5125132), (80, 2562566), (160, 1281283)]