81342540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{451903}}^1$

素因数の和:451918

約数の個数: 36

約数和(自身を含む): 246739584

約数和(自身を除く): 165397044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 451903, 903806, 1355709, 1807612, 2259515, 2711418, 4067127, 4519030, 5422836, 6778545, 8134254, 9038060, 13557090, 16268508, 20335635, 27114180, 40671270, 81342540]

約数ペア:

[(1, 81342540), (2, 40671270), (3, 27114180), (4, 20335635), (5, 16268508), (6, 13557090), (9, 9038060), (10, 8134254), (12, 6778545), (15, 5422836), (18, 4519030), (20, 4067127), (30, 2711418), (36, 2259515), (45, 1807612), (60, 1355709), (90, 903806), (180, 451903)]