287889745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2939}}^1$

素因数の和:3105

約数の個数: 32

約数和(自身を含む): 408965760

約数和(自身を除く): 121076015

約数列:

[1, 5, 11, 13, 55, 65, 137, 143, 685, 715, 1507, 1781, 2939, 7535, 8905, 14695, 19591, 32329, 38207, 97955, 161645, 191035, 402643, 420277, 2013215, 2101385, 4429073, 5234359, 22145365, 26171795, 57577949, 287889745]

約数ペア:

[(1, 287889745), (5, 57577949), (11, 26171795), (13, 22145365), (55, 5234359), (65, 4429073), (137, 2101385), (143, 2013215), (685, 420277), (715, 402643), (1507, 191035), (1781, 161645), (2939, 97955), (7535, 38207), (8905, 32329), (14695, 19591)]