21915047

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{9181}}^1$

素因数の和:9230

約数の個数: 16

約数和(自身を含む): 28207104

約数和(自身を除く): 6292057

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 9181, 64267, 100991, 284611, 706937, 1992277, 3130721, 21915047]

約数ペア:

[(1, 21915047), (7, 3130721), (11, 1992277), (31, 706937), (77, 284611), (217, 100991), (341, 64267), (2387, 9181)]