20195960

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4999}}^1$

素因数の和:5111

約数の個数: 32

約数和(自身を含む): 45900000

約数和(自身を除く): 25704040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4999, 9998, 19996, 24995, 39992, 49990, 99980, 199960, 504899, 1009798, 2019596, 2524495, 4039192, 5048990, 10097980, 20195960]

約数ペア:

[(1, 20195960), (2, 10097980), (4, 5048990), (5, 4039192), (8, 2524495), (10, 2019596), (20, 1009798), (40, 504899), (101, 199960), (202, 99980), (404, 49990), (505, 39992), (808, 24995), (1010, 19996), (2020, 9998), (4040, 4999)]