20978035

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4817}}^1$

素因数の和:4902

約数の個数: 16

約数和(自身を含む): 27520416

約数和(自身を除く): 6542381

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4817, 24085, 62621, 313105, 322739, 1613695, 4195607, 20978035]

約数ペア:

[(1, 20978035), (5, 4195607), (13, 1613695), (65, 322739), (67, 313105), (335, 62621), (871, 24085), (4355, 4817)]