12999740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{49999}}^1$

素因数の和:50021

約数の個数: 24

約数和(自身を含む): 29400000

約数和(自身を除く): 16400260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 49999, 99998, 199996, 249995, 499990, 649987, 999980, 1299974, 2599948, 3249935, 6499870, 12999740]

約数ペア:

[(1, 12999740), (2, 6499870), (4, 3249935), (5, 2599948), (10, 1299974), (13, 999980), (20, 649987), (26, 499990), (52, 249995), (65, 199996), (130, 99998), (260, 49999)]