21071288

素因数分解:

$2^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2707}}^1$

素因数の和:2859

約数の個数: 32

約数和(自身を含む): 45494400

約数和(自身を除く): 24423112

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 2707, 3892, 5414, 7784, 10828, 18949, 21656, 37898, 75796, 151592, 376273, 752546, 1505092, 2633911, 3010184, 5267822, 10535644, 21071288]

約数ペア:

[(1, 21071288), (2, 10535644), (4, 5267822), (7, 3010184), (8, 2633911), (14, 1505092), (28, 752546), (56, 376273), (139, 151592), (278, 75796), (556, 37898), (973, 21656), (1112, 18949), (1946, 10828), (2707, 7784), (3892, 5414)]