126999680

素因数分解:

$2^7\times 5^1\times {\mathrm{198437}}^1$

素因数の和:198456

約数の個数: 32

約数和(自身を含む): 303610140

約数和(自身を除く): 176610460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 198437, 396874, 793748, 992185, 1587496, 1984370, 3174992, 3968740, 6349984, 7937480, 12699968, 15874960, 25399936, 31749920, 63499840, 126999680]

約数ペア:

[(1, 126999680), (2, 63499840), (4, 31749920), (5, 25399936), (8, 15874960), (10, 12699968), (16, 7937480), (20, 6349984), (32, 3968740), (40, 3174992), (64, 1984370), (80, 1587496), (128, 992185), (160, 793748), (320, 396874), (640, 198437)]