519740

素因数分解:

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

素因数の和:2021

約数の個数: 24

約数和(自身を含む): 1176000

約数和(自身を除く): 656260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1999, 3998, 7996, 9995, 19990, 25987, 39980, 51974, 103948, 129935, 259870, 519740]

約数ペア:

[(1, 519740), (2, 259870), (4, 129935), (5, 103948), (10, 51974), (13, 39980), (20, 25987), (26, 19990), (52, 9995), (65, 7996), (130, 3998), (260, 1999)]