19209620

素因数分解:

$2^2\times 5^1\times {\mathrm{769}}^1\times {\mathrm{1249}}^1$

素因数の和:2027

約数の個数: 24

約数和(自身を含む): 40425000

約数和(自身を除く): 21215380

約数列:

[1, 2, 4, 5, 10, 20, 769, 1249, 1538, 2498, 3076, 3845, 4996, 6245, 7690, 12490, 15380, 24980, 960481, 1920962, 3841924, 4802405, 9604810, 19209620]

約数ペア:

[(1, 19209620), (2, 9604810), (4, 4802405), (5, 3841924), (10, 1920962), (20, 960481), (769, 24980), (1249, 15380), (1538, 12490), (2498, 7690), (3076, 6245), (3845, 4996)]