21721167356

素因数分解:

$2^2\times 7^1\times {\mathrm{353}}^1\times {\mathrm{2197609}}^1$

素因数の和:2197973

約数の個数: 24

約数和(自身を含む): 43565420640

約数和(自身を除く): 21844253284

約数列:

[1, 2, 4, 7, 14, 28, 353, 706, 1412, 2471, 4942, 9884, 2197609, 4395218, 8790436, 15383263, 30766526, 61533052, 775755977, 1551511954, 3103023908, 5430291839, 10860583678, 21721167356]

約数ペア:

[(1, 21721167356), (2, 10860583678), (4, 5430291839), (7, 3103023908), (14, 1551511954), (28, 775755977), (353, 61533052), (706, 30766526), (1412, 15383263), (2471, 8790436), (4942, 4395218), (9884, 2197609)]