21033551

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1307}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 27834240

約数和(自身を除く): 6800689

約数列:

[1, 7, 11, 19, 77, 121, 133, 209, 847, 1307, 1463, 2299, 9149, 14377, 16093, 24833, 100639, 158147, 173831, 273163, 1107029, 1912141, 3004793, 21033551]

約数ペア:

[(1, 21033551), (7, 3004793), (11, 1912141), (19, 1107029), (77, 273163), (121, 173831), (133, 158147), (209, 100639), (847, 24833), (1307, 16093), (1463, 14377), (2299, 9149)]