27981455

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 35834400

約数和(自身を除く): 7852945

約数列:

[1, 5, 23, 71, 115, 149, 355, 529, 745, 1633, 2645, 3427, 8165, 10579, 17135, 37559, 52895, 78821, 187795, 243317, 394105, 1216585, 5596291, 27981455]

約数ペア:

[(1, 27981455), (5, 5596291), (23, 1216585), (71, 394105), (115, 243317), (149, 187795), (355, 78821), (529, 52895), (745, 37559), (1633, 17135), (2645, 10579), (3427, 8165)]