18904473

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2971}}^1$

素因数の和:3085

約数の個数: 24

約数和(自身を含む): 31526976

約数和(自身を除く): 12622503

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 707, 909, 2121, 2971, 6363, 8913, 20797, 26739, 62391, 187173, 300071, 900213, 2100497, 2700639, 6301491, 18904473]

約数ペア:

[(1, 18904473), (3, 6301491), (7, 2700639), (9, 2100497), (21, 900213), (63, 300071), (101, 187173), (303, 62391), (707, 26739), (909, 20797), (2121, 8913), (2971, 6363)]