21090729

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{9539}}^1$

素因数の和:9620

約数の個数: 16

約数和(自身を含む): 31138560

約数和(自身を除く): 10047831

約数列:

[1, 3, 11, 33, 67, 201, 737, 2211, 9539, 28617, 104929, 314787, 639113, 1917339, 7030243, 21090729]

約数ペア:

[(1, 21090729), (3, 7030243), (11, 1917339), (33, 639113), (67, 314787), (201, 104929), (737, 28617), (2211, 9539)]