20561013

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{647}}^1$

素因数の和:774

約数の個数: 32

約数和(自身を含む): 33592320

約数和(自身を除く): 13031307

約数列:

[1, 3, 9, 11, 27, 33, 99, 107, 297, 321, 647, 963, 1177, 1941, 2889, 3531, 5823, 7117, 10593, 17469, 21351, 31779, 64053, 69229, 192159, 207687, 623061, 761519, 1869183, 2284557, 6853671, 20561013]

約数ペア:

[(1, 20561013), (3, 6853671), (9, 2284557), (11, 1869183), (27, 761519), (33, 623061), (99, 207687), (107, 192159), (297, 69229), (321, 64053), (647, 31779), (963, 21351), (1177, 17469), (1941, 10593), (2889, 7117), (3531, 5823)]