20347925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{457}}^1$

素因数の和:617

約数の個数: 24

約数和(自身を含む): 27430536

約数和(自身を除く): 7082611

約数列:

[1, 5, 13, 25, 65, 137, 325, 457, 685, 1781, 2285, 3425, 5941, 8905, 11425, 29705, 44525, 62609, 148525, 313045, 813917, 1565225, 4069585, 20347925]

約数ペア:

[(1, 20347925), (5, 4069585), (13, 1565225), (25, 813917), (65, 313045), (137, 148525), (325, 62609), (457, 44525), (685, 29705), (1781, 11425), (2285, 8905), (3425, 5941)]