28540525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{641}}^1$

素因数の和:801

約数の個数: 24

約数和(自身を含む): 38450664

約数和(自身を除く): 9910139

約数列:

[1, 5, 13, 25, 65, 137, 325, 641, 685, 1781, 3205, 3425, 8333, 8905, 16025, 41665, 44525, 87817, 208325, 439085, 1141621, 2195425, 5708105, 28540525]

約数ペア:

[(1, 28540525), (5, 5708105), (13, 2195425), (25, 1141621), (65, 439085), (137, 208325), (325, 87817), (641, 44525), (685, 41665), (1781, 16025), (3205, 8905), (3425, 8333)]