20499590

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49999}}^1$

素因数の和:50047

約数の個数: 16

約数和(自身を含む): 37800000

約数和(自身を除く): 17300410

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 49999, 99998, 249995, 499990, 2049959, 4099918, 10249795, 20499590]

約数ペア:

[(1, 20499590), (2, 10249795), (5, 4099918), (10, 2049959), (41, 499990), (82, 249995), (205, 99998), (410, 49999)]