21440111

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1489}}^1$

素因数の和:1535

約数の個数: 24

約数和(自身を含む): 28536480

約数和(自身を除く): 7096369

約数列:

[1, 7, 11, 17, 77, 119, 121, 187, 847, 1309, 1489, 2057, 10423, 14399, 16379, 25313, 114653, 177191, 180169, 278443, 1261183, 1949101, 3062873, 21440111]

約数ペア:

[(1, 21440111), (7, 3062873), (11, 1949101), (17, 1261183), (77, 278443), (119, 180169), (121, 177191), (187, 114653), (847, 25313), (1309, 16379), (1489, 14399), (2057, 10423)]