81391760

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8011}}^1$

素因数の和:8151

約数の個数: 40

約数和(自身を含む): 190749696

約数和(自身を除く): 109357936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 8011, 10160, 16022, 32044, 40055, 64088, 80110, 128176, 160220, 320440, 640880, 1017397, 2034794, 4069588, 5086985, 8139176, 10173970, 16278352, 20347940, 40695880, 81391760]

約数ペア:

[(1, 81391760), (2, 40695880), (4, 20347940), (5, 16278352), (8, 10173970), (10, 8139176), (16, 5086985), (20, 4069588), (40, 2034794), (80, 1017397), (127, 640880), (254, 320440), (508, 160220), (635, 128176), (1016, 80110), (1270, 64088), (2032, 40055), (2540, 32044), (5080, 16022), (8011, 10160)]