21347781

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{11171}}^1$

素因数の和:11201

約数の個数: 24

約数和(自身を含む): 35661024

約数和(自身を除く): 14313243

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 11171, 33513, 78197, 145223, 234591, 435669, 547379, 1016561, 1642137, 3049683, 7115927, 21347781]

約数ペア:

[(1, 21347781), (3, 7115927), (7, 3049683), (13, 1642137), (21, 1016561), (39, 547379), (49, 435669), (91, 234591), (147, 145223), (273, 78197), (637, 33513), (1911, 11171)]