20900523

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{727}}^1$

素因数の和:811

約数の個数: 24

約数和(自身を含む): 32777472

約数和(自身を除く): 11876949

約数列:

[1, 3, 7, 21, 37, 111, 259, 727, 777, 1369, 2181, 4107, 5089, 9583, 15267, 26899, 28749, 80697, 188293, 564879, 995263, 2985789, 6966841, 20900523]

約数ペア:

[(1, 20900523), (3, 6966841), (7, 2985789), (21, 995263), (37, 564879), (111, 188293), (259, 80697), (727, 28749), (777, 26899), (1369, 15267), (2181, 9583), (4107, 5089)]