21000688786

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{136368109}}^1$

素因数の和:136368129

約数の個数: 16

約数和(自身を含む): 39274015680

約数和(自身を除く): 18273326894

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 136368109, 272736218, 954576763, 1500049199, 1909153526, 3000098398, 10500344393, 21000688786]

約数ペア:

[(1, 21000688786), (2, 10500344393), (7, 3000098398), (11, 1909153526), (14, 1500049199), (22, 954576763), (77, 272736218), (154, 136368109)]