8640405

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2207}}^1$

素因数の和:2250

約数の個数: 32

約数和(自身を含む): 15897600

約数和(自身を除く): 7257195

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 2207, 3915, 6621, 11035, 19863, 33105, 59589, 64003, 99315, 192009, 297945, 320015, 576027, 960045, 1728081, 2880135, 8640405]

約数ペア:

[(1, 8640405), (3, 2880135), (5, 1728081), (9, 960045), (15, 576027), (27, 320015), (29, 297945), (45, 192009), (87, 99315), (135, 64003), (145, 59589), (261, 33105), (435, 19863), (783, 11035), (1305, 6621), (2207, 3915)]