21290373

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{643}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 33287072

約数和(自身を除く): 11996699

約数列:

[1, 3, 9, 13, 39, 117, 283, 643, 849, 1929, 2547, 3679, 5787, 8359, 11037, 25077, 33111, 75231, 181969, 545907, 1637721, 2365597, 7096791, 21290373]

約数ペア:

[(1, 21290373), (3, 7096791), (9, 2365597), (13, 1637721), (39, 545907), (117, 181969), (283, 75231), (643, 33111), (849, 25077), (1929, 11037), (2547, 8359), (3679, 5787)]