17980209

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{643}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 28129920

約数和(自身を除く): 10149711

約数列:

[1, 3, 9, 13, 39, 117, 239, 643, 717, 1929, 2151, 3107, 5787, 8359, 9321, 25077, 27963, 75231, 153677, 461031, 1383093, 1997801, 5993403, 17980209]

約数ペア:

[(1, 17980209), (3, 5993403), (9, 1997801), (13, 1383093), (39, 461031), (117, 153677), (239, 75231), (643, 27963), (717, 25077), (1929, 9321), (2151, 8359), (3107, 5787)]