20686773

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 10106187

約数列:

[1, 3, 17, 29, 51, 71, 87, 197, 213, 493, 591, 1207, 1479, 2059, 3349, 3621, 5713, 6177, 10047, 13987, 17139, 35003, 41961, 97121, 105009, 237779, 291363, 405623, 713337, 1216869, 6895591, 20686773]

約数ペア:

[(1, 20686773), (3, 6895591), (17, 1216869), (29, 713337), (51, 405623), (71, 291363), (87, 237779), (197, 105009), (213, 97121), (493, 41961), (591, 35003), (1207, 17139), (1479, 13987), (2059, 10047), (3349, 6177), (3621, 5713)]