20712267

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{6911}}^1$

素因数の和:6960

約数の個数: 20

約数和(自身を含む): 31781376

約数和(自身を除く): 11069109

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 6911, 20733, 62199, 186597, 255707, 559791, 767121, 2301363, 6904089, 20712267]

約数ペア:

[(1, 20712267), (3, 6904089), (9, 2301363), (27, 767121), (37, 559791), (81, 255707), (111, 186597), (333, 62199), (999, 20733), (2997, 6911)]