21218886

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{90679}}^1$

素因数の和:90700

約数の個数: 24

約数和(自身を含む): 49511280

約数和(自身を除く): 28292394

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 90679, 181358, 272037, 544074, 816111, 1178827, 1632222, 2357654, 3536481, 7072962, 10609443, 21218886]

約数ペア:

[(1, 21218886), (2, 10609443), (3, 7072962), (6, 3536481), (9, 2357654), (13, 1632222), (18, 1178827), (26, 816111), (39, 544074), (78, 272037), (117, 181358), (234, 90679)]