21451906

素因数分解:

$2^1\times 7^3\times {\mathrm{31271}}^1$

素因数の和:31294

約数の個数: 16

約数和(自身を含む): 37526400

約数和(自身を除く): 16074494

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 31271, 62542, 218897, 437794, 1532279, 3064558, 10725953, 21451906]

約数ペア:

[(1, 21451906), (2, 10725953), (7, 3064558), (14, 1532279), (49, 437794), (98, 218897), (343, 62542), (686, 31271)]