21091364

素因数分解:

$2^2\times 7^2\times {\mathrm{107609}}^1$

素因数の和:107627

約数の個数: 18

約数和(自身を含む): 42936390

約数和(自身を除く): 21845026

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 107609, 215218, 430436, 753263, 1506526, 3013052, 5272841, 10545682, 21091364]

約数ペア:

[(1, 21091364), (2, 10545682), (4, 5272841), (7, 3013052), (14, 1506526), (28, 753263), (49, 430436), (98, 215218), (196, 107609)]