21790508

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{839}}^1$

素因数の和:1037

約数の個数: 24

約数和(自身を含む): 39325440

約数和(自身を除く): 17534932

約数列:

[1, 2, 4, 43, 86, 151, 172, 302, 604, 839, 1678, 3356, 6493, 12986, 25972, 36077, 72154, 126689, 144308, 253378, 506756, 5447627, 10895254, 21790508]

約数ペア:

[(1, 21790508), (2, 10895254), (4, 5447627), (43, 506756), (86, 253378), (151, 144308), (172, 126689), (302, 72154), (604, 36077), (839, 25972), (1678, 12986), (3356, 6493)]