28303180

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10181}}^1$

素因数の和:10329

約数の個数: 24

約数和(自身を含む): 59870160

約数和(自身を除く): 31566980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 10181, 20362, 40724, 50905, 101810, 203620, 1415159, 2830318, 5660636, 7075795, 14151590, 28303180]

約数ペア:

[(1, 28303180), (2, 14151590), (4, 7075795), (5, 5660636), (10, 2830318), (20, 1415159), (139, 203620), (278, 101810), (556, 50905), (695, 40724), (1390, 20362), (2780, 10181)]