21920560

素因数分解:

$2^4\times 5^1\times {\mathrm{274007}}^1$

素因数の和:274020

約数の個数: 20

約数和(自身を含む): 50965488

約数和(自身を除く): 29044928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274007, 548014, 1096028, 1370035, 2192056, 2740070, 4384112, 5480140, 10960280, 21920560]

約数ペア:

[(1, 21920560), (2, 10960280), (4, 5480140), (5, 4384112), (8, 2740070), (10, 2192056), (16, 1370035), (20, 1096028), (40, 548014), (80, 274007)]