21000750147

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{883}}^1\times {\mathrm{67759}}^1$

素因数の和:68664

約数の個数: 32

約数和(自身を含む): 33543910400

約数和(自身を除く): 12543160253

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 883, 2649, 7947, 11479, 23841, 34437, 67759, 103311, 203277, 309933, 609831, 880867, 1829493, 2642601, 7927803, 23783409, 59831197, 179493591, 538480773, 777805561, 1615442319, 2333416683, 7000250049, 21000750147]

約数ペア:

[(1, 21000750147), (3, 7000250049), (9, 2333416683), (13, 1615442319), (27, 777805561), (39, 538480773), (117, 179493591), (351, 59831197), (883, 23783409), (2649, 7927803), (7947, 2642601), (11479, 1829493), (23841, 880867), (34437, 609831), (67759, 309933), (103311, 203277)]