18917277

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 27941760

約数和(自身を除く): 9024483

約数列:

[1, 3, 17, 41, 51, 83, 109, 123, 249, 327, 697, 1411, 1853, 2091, 3403, 4233, 4469, 5559, 9047, 10209, 13407, 27141, 57851, 75973, 153799, 173553, 227919, 370927, 461397, 1112781, 6305759, 18917277]

約数ペア:

[(1, 18917277), (3, 6305759), (17, 1112781), (41, 461397), (51, 370927), (83, 227919), (109, 173553), (123, 153799), (249, 75973), (327, 57851), (697, 27141), (1411, 13407), (1853, 10209), (2091, 9047), (3403, 5559), (4233, 4469)]