21003087

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{27031}}^1$

素因数の和:27078

約数の個数: 16

約数和(自身を含む): 32870912

約数和(自身を除く): 11867825

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 27031, 81093, 189217, 567651, 1000147, 3000441, 7001029, 21003087]

約数ペア:

[(1, 21003087), (3, 7001029), (7, 3000441), (21, 1000147), (37, 567651), (111, 189217), (259, 81093), (777, 27031)]