21305977

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3109}}^1$

素因数の和:3216

約数の個数: 16

約数和(自身を含む): 26870400

約数和(自身を除く): 5564423

約数列:

[1, 7, 11, 77, 89, 623, 979, 3109, 6853, 21763, 34199, 239393, 276701, 1936907, 3043711, 21305977]

約数ペア:

[(1, 21305977), (7, 3043711), (11, 1936907), (77, 276701), (89, 239393), (623, 34199), (979, 21763), (3109, 6853)]