21604156

素因数分解:

$2^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{7211}}^1$

素因数の和:7329

約数の個数: 24

約数和(自身を含む): 43618176

約数和(自身を除く): 22014020

約数列:

[1, 2, 4, 7, 14, 28, 107, 214, 428, 749, 1498, 2996, 7211, 14422, 28844, 50477, 100954, 201908, 771577, 1543154, 3086308, 5401039, 10802078, 21604156]

約数ペア:

[(1, 21604156), (2, 10802078), (4, 5401039), (7, 3086308), (14, 1543154), (28, 771577), (107, 201908), (214, 100954), (428, 50477), (749, 28844), (1498, 14422), (2996, 7211)]