28987465

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{709}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 40793760

約数和(自身を除く): 11806295

約数列:

[1, 5, 13, 17, 37, 65, 85, 185, 221, 481, 629, 709, 1105, 2405, 3145, 3545, 8177, 9217, 12053, 26233, 40885, 46085, 60265, 131165, 156689, 341029, 445961, 783445, 1705145, 2229805, 5797493, 28987465]

約数ペア:

[(1, 28987465), (5, 5797493), (13, 2229805), (17, 1705145), (37, 783445), (65, 445961), (85, 341029), (185, 156689), (221, 131165), (481, 60265), (629, 46085), (709, 40885), (1105, 26233), (2405, 12053), (3145, 9217), (3545, 8177)]