51639680

素因数分解:

$2^7\times 5^1\times {\mathrm{80687}}^1$

素因数の和:80706

約数の個数: 32

約数和(自身を含む): 123452640

約数和(自身を除く): 71812960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 80687, 161374, 322748, 403435, 645496, 806870, 1290992, 1613740, 2581984, 3227480, 5163968, 6454960, 10327936, 12909920, 25819840, 51639680]

約数ペア:

[(1, 51639680), (2, 25819840), (4, 12909920), (5, 10327936), (8, 6454960), (10, 5163968), (16, 3227480), (20, 2581984), (32, 1613740), (40, 1290992), (64, 806870), (80, 645496), (128, 403435), (160, 322748), (320, 161374), (640, 80687)]