21399807

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{601}}^1$

素因数の和:711

約数の個数: 32

約数和(自身を含む): 33981696

約数和(自身を除く): 12581889

約数列:

[1, 3, 11, 13, 33, 39, 83, 143, 249, 429, 601, 913, 1079, 1803, 2739, 3237, 6611, 7813, 11869, 19833, 23439, 35607, 49883, 85943, 149649, 257829, 548713, 648479, 1646139, 1945437, 7133269, 21399807]

約数ペア:

[(1, 21399807), (3, 7133269), (11, 1945437), (13, 1646139), (33, 648479), (39, 548713), (83, 257829), (143, 149649), (249, 85943), (429, 49883), (601, 35607), (913, 23439), (1079, 19833), (1803, 11869), (2739, 7813), (3237, 6611)]