7980021

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7451}}^1$

素因数の和:7481

約数の個数: 24

約数和(自身を含む): 13950144

約数和(自身を除く): 5970123

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 7451, 22353, 52157, 67059, 126667, 156471, 380001, 469413, 886669, 1140003, 2660007, 7980021]

約数ペア:

[(1, 7980021), (3, 2660007), (7, 1140003), (9, 886669), (17, 469413), (21, 380001), (51, 156471), (63, 126667), (119, 67059), (153, 52157), (357, 22353), (1071, 7451)]