81811575

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{15809}}^1$

素因数の和:15848

約数の個数: 36

約数和(自身を含む): 152914320

約数和(自身を除く): 71102745

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 5175, 15809, 47427, 79045, 142281, 237135, 363607, 395225, 711405, 1090821, 1185675, 1818035, 3272463, 3557025, 5454105, 9090175, 16362315, 27270525, 81811575]

約数ペア:

[(1, 81811575), (3, 27270525), (5, 16362315), (9, 9090175), (15, 5454105), (23, 3557025), (25, 3272463), (45, 1818035), (69, 1185675), (75, 1090821), (115, 711405), (207, 395225), (225, 363607), (345, 237135), (575, 142281), (1035, 79045), (1725, 47427), (5175, 15809)]