21816465

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6959}}^1$

素因数の和:6997

約数の個数: 32

約数和(自身を含む): 40089600

約数和(自身を除く): 18273135

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6959, 20877, 34795, 76549, 104385, 132221, 229647, 382745, 396663, 661105, 1148235, 1454431, 1983315, 4363293, 7272155, 21816465]

約数ペア:

[(1, 21816465), (3, 7272155), (5, 4363293), (11, 1983315), (15, 1454431), (19, 1148235), (33, 661105), (55, 396663), (57, 382745), (95, 229647), (165, 132221), (209, 104385), (285, 76549), (627, 34795), (1045, 20877), (3135, 6959)]