20281235

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4657}}^1$

素因数の和:4742

約数の個数: 16

約数和(自身を含む): 26606496

約数和(自身を除く): 6325261

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4657, 23285, 60541, 302705, 312019, 1560095, 4056247, 20281235]

約数ペア:

[(1, 20281235), (5, 4056247), (13, 1560095), (65, 312019), (67, 302705), (335, 60541), (871, 23285), (4355, 4657)]