20698672

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{3163}}^1$

素因数の和:3580

約数の個数: 20

約数和(自身を含む): 40214440

約数和(自身を除く): 19515768

約数列:

[1, 2, 4, 8, 16, 409, 818, 1636, 3163, 3272, 6326, 6544, 12652, 25304, 50608, 1293667, 2587334, 5174668, 10349336, 20698672]

約数ペア:

[(1, 20698672), (2, 10349336), (4, 5174668), (8, 2587334), (16, 1293667), (409, 50608), (818, 25304), (1636, 12652), (3163, 6544), (3272, 6326)]