2078960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1999}}^1$

素因数の和:2025

約数の個数: 40

約数和(自身を含む): 5208000

約数和(自身を除く): 3129040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1999, 3998, 7996, 9995, 15992, 19990, 25987, 31984, 39980, 51974, 79960, 103948, 129935, 159920, 207896, 259870, 415792, 519740, 1039480, 2078960]

約数ペア:

[(1, 2078960), (2, 1039480), (4, 519740), (5, 415792), (8, 259870), (10, 207896), (13, 159920), (16, 129935), (20, 103948), (26, 79960), (40, 51974), (52, 39980), (65, 31984), (80, 25987), (104, 19990), (130, 15992), (208, 9995), (260, 7996), (520, 3998), (1040, 1999)]