19280709

素因数分解:

$3^2\times 7^1\times {\mathrm{463}}^1\times {\mathrm{661}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 31945472

約数和(自身を除く): 12664763

約数列:

[1, 3, 7, 9, 21, 63, 463, 661, 1389, 1983, 3241, 4167, 4627, 5949, 9723, 13881, 29169, 41643, 306043, 918129, 2142301, 2754387, 6426903, 19280709]

約数ペア:

[(1, 19280709), (3, 6426903), (7, 2754387), (9, 2142301), (21, 918129), (63, 306043), (463, 41643), (661, 29169), (1389, 13881), (1983, 9723), (3241, 5949), (4167, 4627)]