21508563

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{1481}}^1$

素因数の和:1634

約数の個数: 16

約数和(自身を含む): 29592576

約数和(自身を除く): 8084013

約数列:

[1, 3, 47, 103, 141, 309, 1481, 4443, 4841, 14523, 69607, 152543, 208821, 457629, 7169521, 21508563]

約数ペア:

[(1, 21508563), (3, 7169521), (47, 457629), (103, 208821), (141, 152543), (309, 69607), (1481, 14523), (4443, 4841)]