21664665

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1621}}^1$

素因数の和:1652

約数の個数: 48

約数和(自身を含む): 42509376

約数和(自身を除く): 20844711

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 891, 1215, 1485, 1621, 2673, 4455, 4863, 8105, 13365, 14589, 17831, 24315, 43767, 53493, 72945, 89155, 131301, 160479, 218835, 267465, 393903, 481437, 656505, 802395, 1444311, 1969515, 2407185, 4332933, 7221555, 21664665]

約数ペア:

[(1, 21664665), (3, 7221555), (5, 4332933), (9, 2407185), (11, 1969515), (15, 1444311), (27, 802395), (33, 656505), (45, 481437), (55, 393903), (81, 267465), (99, 218835), (135, 160479), (165, 131301), (243, 89155), (297, 72945), (405, 53493), (495, 43767), (891, 24315), (1215, 17831), (1485, 14589), (1621, 13365), (2673, 8105), (4455, 4863)]