21993777

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{593}}^1$

素因数の和:929

約数の個数: 24

約数和(自身を含む): 34378344

約数和(自身を除く): 12384567

約数列:

[1, 3, 9, 13, 39, 117, 317, 593, 951, 1779, 2853, 4121, 5337, 7709, 12363, 23127, 37089, 69381, 187981, 563943, 1691829, 2443753, 7331259, 21993777]

約数ペア:

[(1, 21993777), (3, 7331259), (9, 2443753), (13, 1691829), (39, 563943), (117, 187981), (317, 69381), (593, 37089), (951, 23127), (1779, 12363), (2853, 7709), (4121, 5337)]