161567680

素因数分解:

$2^6\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4999}}^1$

素因数の和:5117

約数の個数: 56

約数和(自身を含む): 388620000

約数和(自身を除く): 227052320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 160, 202, 320, 404, 505, 808, 1010, 1616, 2020, 3232, 4040, 4999, 6464, 8080, 9998, 16160, 19996, 24995, 32320, 39992, 49990, 79984, 99980, 159968, 199960, 319936, 399920, 504899, 799840, 1009798, 1599680, 2019596, 2524495, 4039192, 5048990, 8078384, 10097980, 16156768, 20195960, 32313536, 40391920, 80783840, 161567680]

約数ペア:

[(1, 161567680), (2, 80783840), (4, 40391920), (5, 32313536), (8, 20195960), (10, 16156768), (16, 10097980), (20, 8078384), (32, 5048990), (40, 4039192), (64, 2524495), (80, 2019596), (101, 1599680), (160, 1009798), (202, 799840), (320, 504899), (404, 399920), (505, 319936), (808, 199960), (1010, 159968), (1616, 99980), (2020, 79984), (3232, 49990), (4040, 39992), (4999, 32320), (6464, 24995), (8080, 19996), (9998, 16160)]