129721480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{463291}}^1$

素因数の和:463309

約数の個数: 32

約数和(自身を含む): 333570240

約数和(自身を除く): 203848760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 463291, 926582, 1853164, 2316455, 3243037, 3706328, 4632910, 6486074, 9265820, 12972148, 16215185, 18531640, 25944296, 32430370, 64860740, 129721480]

約数ペア:

[(1, 129721480), (2, 64860740), (4, 32430370), (5, 25944296), (7, 18531640), (8, 16215185), (10, 12972148), (14, 9265820), (20, 6486074), (28, 4632910), (35, 3706328), (40, 3243037), (56, 2316455), (70, 1853164), (140, 926582), (280, 463291)]