4157920

素因数分解:

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

素因数の和:2027

約数の個数: 48

約数和(自身を含む): 10584000

約数和(自身を除く): 6426080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 1999, 2080, 3998, 7996, 9995, 15992, 19990, 25987, 31984, 39980, 51974, 63968, 79960, 103948, 129935, 159920, 207896, 259870, 319840, 415792, 519740, 831584, 1039480, 2078960, 4157920]

約数ペア:

[(1, 4157920), (2, 2078960), (4, 1039480), (5, 831584), (8, 519740), (10, 415792), (13, 319840), (16, 259870), (20, 207896), (26, 159920), (32, 129935), (40, 103948), (52, 79960), (65, 63968), (80, 51974), (104, 39980), (130, 31984), (160, 25987), (208, 19990), (260, 15992), (416, 9995), (520, 7996), (1040, 3998), (1999, 2080)]