13513240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1999}}^1$

素因数の和:2036

約数の個数: 48

約数和(自身を含む): 32940000

約数和(自身を除く): 19426760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 1999, 3380, 3998, 6760, 7996, 9995, 15992, 19990, 25987, 39980, 51974, 79960, 103948, 129935, 207896, 259870, 337831, 519740, 675662, 1039480, 1351324, 1689155, 2702648, 3378310, 6756620, 13513240]

約数ペア:

[(1, 13513240), (2, 6756620), (4, 3378310), (5, 2702648), (8, 1689155), (10, 1351324), (13, 1039480), (20, 675662), (26, 519740), (40, 337831), (52, 259870), (65, 207896), (104, 129935), (130, 103948), (169, 79960), (260, 51974), (338, 39980), (520, 25987), (676, 19990), (845, 15992), (1352, 9995), (1690, 7996), (1999, 6760), (3380, 3998)]