51536720

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1291}}^1$

素因数の和:1803

約数の個数: 40

約数和(自身を含む): 120156000

約数和(自身を除く): 68619280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 998, 1291, 1996, 2495, 2582, 3992, 4990, 5164, 6455, 7984, 9980, 10328, 12910, 19960, 20656, 25820, 39920, 51640, 103280, 644209, 1288418, 2576836, 3221045, 5153672, 6442090, 10307344, 12884180, 25768360, 51536720]

約数ペア:

[(1, 51536720), (2, 25768360), (4, 12884180), (5, 10307344), (8, 6442090), (10, 5153672), (16, 3221045), (20, 2576836), (40, 1288418), (80, 644209), (499, 103280), (998, 51640), (1291, 39920), (1996, 25820), (2495, 20656), (2582, 19960), (3992, 12910), (4990, 10328), (5164, 9980), (6455, 7984)]