20793983

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 4486657

約数列:

[1, 7, 43, 49, 71, 139, 301, 497, 973, 2107, 3053, 3479, 5977, 6811, 9869, 21371, 41839, 69083, 149597, 292873, 424367, 483581, 2970569, 20793983]

約数ペア:

[(1, 20793983), (7, 2970569), (43, 483581), (49, 424367), (71, 292873), (139, 149597), (301, 69083), (497, 41839), (973, 21371), (2107, 9869), (3053, 6811), (3479, 5977)]