204759680

素因数分解:

$2^7\times 5^1\times {\mathrm{319937}}^1$

素因数の和:319956

約数の個数: 32

約数和(自身を含む): 489505140

約数和(自身を除く): 284745460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 319937, 639874, 1279748, 1599685, 2559496, 3199370, 5118992, 6398740, 10237984, 12797480, 20475968, 25594960, 40951936, 51189920, 102379840, 204759680]

約数ペア:

[(1, 204759680), (2, 102379840), (4, 51189920), (5, 40951936), (8, 25594960), (10, 20475968), (16, 12797480), (20, 10237984), (32, 6398740), (40, 5118992), (64, 3199370), (80, 2559496), (128, 1599685), (160, 1279748), (320, 639874), (640, 319937)]