1280709

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{269}}^1$

素因数の和:321

約数の個数: 18

約数和(自身を含む): 1941030

約数和(自身を除く): 660321

約数列:

[1, 3, 9, 23, 69, 207, 269, 529, 807, 1587, 2421, 4761, 6187, 18561, 55683, 142301, 426903, 1280709]

約数ペア:

[(1, 1280709), (3, 426903), (9, 142301), (23, 55683), (69, 18561), (207, 6187), (269, 4761), (529, 2421), (807, 1587)]