21191093

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 26966016

約数和(自身を除く): 5774923

約数列:

[1, 7, 11, 77, 121, 127, 197, 847, 889, 1379, 1397, 2167, 9779, 15169, 15367, 23837, 25019, 107569, 166859, 175133, 275209, 1926463, 3027299, 21191093]

約数ペア:

[(1, 21191093), (7, 3027299), (11, 1926463), (77, 275209), (121, 175133), (127, 166859), (197, 107569), (847, 25019), (889, 23837), (1379, 15367), (1397, 15169), (2167, 9779)]