21550276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{647}}^1\times {\mathrm{757}}^1$

素因数の和:1419

約数の個数: 24

約数和(自身を含む): 41259456

約数和(自身を除く): 19709180

約数列:

[1, 2, 4, 11, 22, 44, 647, 757, 1294, 1514, 2588, 3028, 7117, 8327, 14234, 16654, 28468, 33308, 489779, 979558, 1959116, 5387569, 10775138, 21550276]

約数ペア:

[(1, 21550276), (2, 10775138), (4, 5387569), (11, 1959116), (22, 979558), (44, 489779), (647, 33308), (757, 28468), (1294, 16654), (1514, 14234), (2588, 8327), (3028, 7117)]