21178729

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{5107}}^1$

素因数の和:5160

約数の個数: 16

約数和(自身を含む): 25744320

約数和(自身を除く): 4565591

約数列:

[1, 11, 13, 29, 143, 319, 377, 4147, 5107, 56177, 66391, 148103, 730301, 1629133, 1925339, 21178729]

約数ペア:

[(1, 21178729), (11, 1925339), (13, 1629133), (29, 730301), (143, 148103), (319, 66391), (377, 56177), (4147, 5107)]