80984180

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{29131}}^1$

素因数の和:29279

約数の個数: 24

約数和(自身を含む): 171296160

約数和(自身を除く): 90311980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 29131, 58262, 116524, 145655, 291310, 582620, 4049209, 8098418, 16196836, 20246045, 40492090, 80984180]

約数ペア:

[(1, 80984180), (2, 40492090), (4, 20246045), (5, 16196836), (10, 8098418), (20, 4049209), (139, 582620), (278, 291310), (556, 145655), (695, 116524), (1390, 58262), (2780, 29131)]