20351825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{4817}}^1$

素因数の和:4853

約数の個数: 18

約数和(自身を含む): 27332514

約数和(自身を除く): 6980689

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 4817, 24085, 62621, 120425, 313105, 814073, 1565525, 4070365, 20351825]

約数ペア:

[(1, 20351825), (5, 4070365), (13, 1565525), (25, 814073), (65, 313105), (169, 120425), (325, 62621), (845, 24085), (4225, 4817)]