8720860

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3137}}^1$

素因数の和:3285

約数の個数: 24

約数和(自身を含む): 18451440

約数和(自身を除く): 9730580

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 3137, 6274, 12548, 15685, 31370, 62740, 436043, 872086, 1744172, 2180215, 4360430, 8720860]

約数ペア:

[(1, 8720860), (2, 4360430), (4, 2180215), (5, 1744172), (10, 872086), (20, 436043), (139, 62740), (278, 31370), (556, 15685), (695, 12548), (1390, 6274), (2780, 3137)]