2019019985

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{1999}}^1\times {\mathrm{2557}}^1$

素因数の和:4640

約数の個数: 16

約数和(自身を含む): 2455680000

約数和(自身を除く): 436660015

約数列:

[1, 5, 79, 395, 1999, 2557, 9995, 12785, 157921, 202003, 789605, 1010015, 5111443, 25557215, 403803997, 2019019985]

約数ペア:

[(1, 2019019985), (5, 403803997), (79, 25557215), (395, 5111443), (1999, 1010015), (2557, 789605), (9995, 202003), (12785, 157921)]