21642819

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{223}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 12032445

約数列:

[1, 3, 11, 17, 33, 51, 173, 187, 223, 519, 561, 669, 1903, 2453, 2941, 3791, 5709, 7359, 8823, 11373, 32351, 38579, 41701, 97053, 115737, 125103, 424369, 655843, 1273107, 1967529, 7214273, 21642819]

約数ペア:

[(1, 21642819), (3, 7214273), (11, 1967529), (17, 1273107), (33, 655843), (51, 424369), (173, 125103), (187, 115737), (223, 97053), (519, 41701), (561, 38579), (669, 32351), (1903, 11373), (2453, 8823), (2941, 7359), (3791, 5709)]