21000705

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127277}}^1$

素因数の和:127296

約数の個数: 16

約数和(自身を含む): 36656064

約数和(自身を除く): 15655359

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 127277, 381831, 636385, 1400047, 1909155, 4200141, 7000235, 21000705]

約数ペア:

[(1, 21000705), (3, 7000235), (5, 4200141), (11, 1909155), (15, 1400047), (33, 636385), (55, 381831), (165, 127277)]