19889337

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 30602880

約数和(自身を除く): 10713543

約数列:

[1, 3, 13, 17, 39, 51, 131, 221, 229, 393, 663, 687, 1703, 2227, 2977, 3893, 5109, 6681, 8931, 11679, 28951, 29999, 50609, 86853, 89997, 151827, 389987, 509983, 1169961, 1529949, 6629779, 19889337]

約数ペア:

[(1, 19889337), (3, 6629779), (13, 1529949), (17, 1169961), (39, 509983), (51, 389987), (131, 151827), (221, 89997), (229, 86853), (393, 50609), (663, 29999), (687, 28951), (1703, 11679), (2227, 8931), (2977, 6681), (3893, 5109)]