28807675

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 38810016

約数和(自身を除く): 10002341

約数列:

[1, 5, 13, 25, 65, 137, 325, 647, 685, 1781, 3235, 3425, 8411, 8905, 16175, 42055, 44525, 88639, 210275, 443195, 1152307, 2215975, 5761535, 28807675]

約数ペア:

[(1, 28807675), (5, 5761535), (13, 2215975), (25, 1152307), (65, 443195), (137, 210275), (325, 88639), (647, 44525), (685, 42055), (1781, 16175), (3235, 8905), (3425, 8411)]