20872690

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{50909}}^1$

素因数の和:50957

約数の個数: 16

約数和(自身を含む): 38487960

約数和(自身を除く): 17615270

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 50909, 101818, 254545, 509090, 2087269, 4174538, 10436345, 20872690]

約数ペア:

[(1, 20872690), (2, 10436345), (5, 4174538), (10, 2087269), (41, 509090), (82, 254545), (205, 101818), (410, 50909)]