28639247

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 36330624

約数和(自身を除く): 7691377

約数列:

[1, 7, 13, 43, 91, 169, 301, 559, 563, 1183, 3913, 3941, 7267, 7319, 24209, 50869, 51233, 95147, 169463, 314717, 666029, 2203019, 4091321, 28639247]

約数ペア:

[(1, 28639247), (7, 4091321), (13, 2203019), (43, 666029), (91, 314717), (169, 169463), (301, 95147), (559, 51233), (563, 50869), (1183, 24209), (3913, 7319), (3941, 7267)]