21181572

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{8287}}^1$

素因数の和:8368

約数の個数: 36

約数和(自身を含む): 54302976

約数和(自身を除く): 33121404

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 8287, 16574, 24861, 33148, 49722, 74583, 99444, 149166, 298332, 588377, 1176754, 1765131, 2353508, 3530262, 5295393, 7060524, 10590786, 21181572]

約数ペア:

[(1, 21181572), (2, 10590786), (3, 7060524), (4, 5295393), (6, 3530262), (9, 2353508), (12, 1765131), (18, 1176754), (36, 588377), (71, 298332), (142, 149166), (213, 99444), (284, 74583), (426, 49722), (639, 33148), (852, 24861), (1278, 16574), (2556, 8287)]