19681317

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 29193216

約数和(自身を除く): 9511899

約数列:

[1, 3, 9, 67, 127, 201, 257, 381, 603, 771, 1143, 2313, 8509, 17219, 25527, 32639, 51657, 76581, 97917, 154971, 293751, 2186813, 6560439, 19681317]

約数ペア:

[(1, 19681317), (3, 6560439), (9, 2186813), (67, 293751), (127, 154971), (201, 97917), (257, 76581), (381, 51657), (603, 32639), (771, 25527), (1143, 17219), (2313, 8509)]