21005514279

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{137290943}}^1$

素因数の和:137290966

約数の個数: 12

約数和(自身を含む): 32126080896

約数和(自身を除く): 11120566617

約数列:

[1, 3, 9, 17, 51, 153, 137290943, 411872829, 1235618487, 2333946031, 7001838093, 21005514279]

約数ペア:

[(1, 21005514279), (3, 7001838093), (9, 2333946031), (17, 1235618487), (51, 411872829), (153, 137290943)]