67840825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{16057}}^1$

素因数の和:16093

約数の個数: 18

約数和(自身を含む): 91097034

約数和(自身を除く): 23256209

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 16057, 80285, 208741, 401425, 1043705, 2713633, 5218525, 13568165, 67840825]

約数ペア:

[(1, 67840825), (5, 13568165), (13, 5218525), (25, 2713633), (65, 1043705), (169, 401425), (325, 208741), (845, 80285), (4225, 16057)]