21878172

素因数分解:

$2^2\times 3^2\times {\mathrm{607727}}^1$

素因数の和:607737

約数の個数: 18

約数和(自身を含む): 55303248

約数和(自身を除く): 33425076

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 607727, 1215454, 1823181, 2430908, 3646362, 5469543, 7292724, 10939086, 21878172]

約数ペア:

[(1, 21878172), (2, 10939086), (3, 7292724), (4, 5469543), (6, 3646362), (9, 2430908), (12, 1823181), (18, 1215454), (36, 607727)]