21550705

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 28728000

約数和(自身を除く): 7177295

約数列:

[1, 5, 11, 55, 121, 179, 199, 605, 895, 995, 1969, 2189, 9845, 10945, 21659, 24079, 35621, 108295, 120395, 178105, 391831, 1959155, 4310141, 21550705]

約数ペア:

[(1, 21550705), (5, 4310141), (11, 1959155), (55, 391831), (121, 178105), (179, 120395), (199, 108295), (605, 35621), (895, 24079), (995, 21659), (1969, 10945), (2189, 9845)]