978003

素因数分解:

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

素因数の和:675

約数の個数: 18

約数和(自身を含む): 1532076

約数和(自身を除く): 554073

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 643, 1521, 1929, 5787, 8359, 25077, 75231, 108667, 326001, 978003]

約数ペア:

[(1, 978003), (3, 326001), (9, 108667), (13, 75231), (39, 25077), (117, 8359), (169, 5787), (507, 1929), (643, 1521)]