1388420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{6311}}^1$

素因数の和:6331

約数の個数: 24

約数和(自身を含む): 3181248

約数和(自身を除く): 1792828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 6311, 12622, 25244, 31555, 63110, 69421, 126220, 138842, 277684, 347105, 694210, 1388420]

約数ペア:

[(1, 1388420), (2, 694210), (4, 347105), (5, 277684), (10, 138842), (11, 126220), (20, 69421), (22, 63110), (44, 31555), (55, 25244), (110, 12622), (220, 6311)]