21043155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1873}}^1$

素因数の和:1995

約数の個数: 32

約数和(自身を含む): 38859264

約数和(自身を除く): 17816109

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 107, 321, 535, 749, 1605, 1873, 2247, 3745, 5619, 9365, 11235, 13111, 28095, 39333, 65555, 196665, 200411, 601233, 1002055, 1402877, 3006165, 4208631, 7014385, 21043155]

約数ペア:

[(1, 21043155), (3, 7014385), (5, 4208631), (7, 3006165), (15, 1402877), (21, 1002055), (35, 601233), (105, 200411), (107, 196665), (321, 65555), (535, 39333), (749, 28095), (1605, 13111), (1873, 11235), (2247, 9365), (3745, 5619)]