21051070

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{39719}}^1$

素因数の和:39779

約数の個数: 16

約数和(自身を含む): 38607840

約数和(自身を除く): 17556770

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 39719, 79438, 198595, 397190, 2105107, 4210214, 10525535, 21051070]

約数ペア:

[(1, 21051070), (2, 10525535), (5, 4210214), (10, 2105107), (53, 397190), (106, 198595), (265, 79438), (530, 39719)]