21739081

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{4049}}^1$

素因数の和:4128

約数の個数: 16

約数和(自身を含む): 27216000

約数和(自身を除く): 5476919

約数列:

[1, 7, 13, 59, 91, 413, 767, 4049, 5369, 28343, 52637, 238891, 368459, 1672237, 3105583, 21739081]

約数ペア:

[(1, 21739081), (7, 3105583), (13, 1672237), (59, 368459), (91, 238891), (413, 52637), (767, 28343), (4049, 5369)]