21255288

素因数分解:

$2^3\times 3^1\times {\mathrm{157}}^1\times {\mathrm{5641}}^1$

素因数の和:5807

約数の個数: 32

約数和(自身を含む): 53486160

約数和(自身を除く): 32230872

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 157, 314, 471, 628, 942, 1256, 1884, 3768, 5641, 11282, 16923, 22564, 33846, 45128, 67692, 135384, 885637, 1771274, 2656911, 3542548, 5313822, 7085096, 10627644, 21255288]

約数ペア:

[(1, 21255288), (2, 10627644), (3, 7085096), (4, 5313822), (6, 3542548), (8, 2656911), (12, 1771274), (24, 885637), (157, 135384), (314, 67692), (471, 45128), (628, 33846), (942, 22564), (1256, 16923), (1884, 11282), (3768, 5641)]