320886620

素因数分解:

$2^2\times 5^1\times {\mathrm{1913}}^1\times {\mathrm{8387}}^1$

素因数の和:10309

約数の個数: 24

約数和(自身を含む): 674294544

約数和(自身を除く): 353407924

約数列:

[1, 2, 4, 5, 10, 20, 1913, 3826, 7652, 8387, 9565, 16774, 19130, 33548, 38260, 41935, 83870, 167740, 16044331, 32088662, 64177324, 80221655, 160443310, 320886620]

約数ペア:

[(1, 320886620), (2, 160443310), (4, 80221655), (5, 64177324), (10, 32088662), (20, 16044331), (1913, 167740), (3826, 83870), (7652, 41935), (8387, 38260), (9565, 33548), (16774, 19130)]