20388916

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{683}}^1$

素因数の和:1143

約数の個数: 24

約数和(自身を含む): 37920960

約数和(自身を除く): 17532044

約数列:

[1, 2, 4, 17, 34, 68, 439, 683, 878, 1366, 1756, 2732, 7463, 11611, 14926, 23222, 29852, 46444, 299837, 599674, 1199348, 5097229, 10194458, 20388916]

約数ペア:

[(1, 20388916), (2, 10194458), (4, 5097229), (17, 1199348), (34, 599674), (68, 299837), (439, 46444), (683, 29852), (878, 23222), (1366, 14926), (1756, 11611), (2732, 7463)]