21562767

素因数分解:

$3^4\times {\mathrm{509}}^1\times {\mathrm{523}}^1$

素因数の和:1044

約数の個数: 20

約数和(自身を含む): 32336040

約数和(自身を除く): 10773273

約数列:

[1, 3, 9, 27, 81, 509, 523, 1527, 1569, 4581, 4707, 13743, 14121, 41229, 42363, 266207, 798621, 2395863, 7187589, 21562767]

約数ペア:

[(1, 21562767), (3, 7187589), (9, 2395863), (27, 798621), (81, 266207), (509, 42363), (523, 41229), (1527, 14121), (1569, 13743), (4581, 4707)]