21762806

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{67}}^1$

素因数の和:157

約数の個数: 36

約数和(自身を含む): 37070676

約数和(自身を除く): 15307870

約数列:

[1, 2, 13, 26, 31, 62, 67, 134, 169, 338, 403, 806, 871, 961, 1742, 1922, 2077, 4154, 5239, 10478, 11323, 12493, 22646, 24986, 27001, 54002, 64387, 128774, 162409, 324818, 351013, 702026, 837031, 1674062, 10881403, 21762806]

約数ペア:

[(1, 21762806), (2, 10881403), (13, 1674062), (26, 837031), (31, 702026), (62, 351013), (67, 324818), (134, 162409), (169, 128774), (338, 64387), (403, 54002), (806, 27001), (871, 24986), (961, 22646), (1742, 12493), (1922, 11323), (2077, 10478), (4154, 5239)]