16540120

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2099}}^1$

素因数の和:2307

約数の個数: 32

約数和(自身を含む): 37422000

約数和(自身を除く): 20881880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2099, 3940, 4198, 7880, 8396, 10495, 16792, 20990, 41980, 83960, 413503, 827006, 1654012, 2067515, 3308024, 4135030, 8270060, 16540120]

約数ペア:

[(1, 16540120), (2, 8270060), (4, 4135030), (5, 3308024), (8, 2067515), (10, 1654012), (20, 827006), (40, 413503), (197, 83960), (394, 41980), (788, 20990), (985, 16792), (1576, 10495), (1970, 8396), (2099, 7880), (3940, 4198)]