640442

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{677}}^1$

素因数の和:733

約数の個数: 16

約数和(自身を含む): 1073952

約数和(自身を除く): 433510

約数列:

[1, 2, 11, 22, 43, 86, 473, 677, 946, 1354, 7447, 14894, 29111, 58222, 320221, 640442]

約数ペア:

[(1, 640442), (2, 320221), (11, 58222), (22, 29111), (43, 14894), (86, 7447), (473, 1354), (677, 946)]