138109640

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{8011}}^1$

素因数の和:8453

約数の個数: 32

約数和(自身を含む): 311506560

約数和(自身を除く): 173396920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8011, 8620, 16022, 17240, 32044, 40055, 64088, 80110, 160220, 320440, 3452741, 6905482, 13810964, 17263705, 27621928, 34527410, 69054820, 138109640]

約数ペア:

[(1, 138109640), (2, 69054820), (4, 34527410), (5, 27621928), (8, 17263705), (10, 13810964), (20, 6905482), (40, 3452741), (431, 320440), (862, 160220), (1724, 80110), (2155, 64088), (3448, 40055), (4310, 32044), (8011, 17240), (8620, 16022)]