21607911

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61561}}^1$

素因数の和:61583

約数の個数: 16

約数和(自身を含む): 34474720

約数和(自身を除く): 12866809

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61561, 184683, 554049, 800293, 1662147, 2400879, 7202637, 21607911]

約数ペア:

[(1, 21607911), (3, 7202637), (9, 2400879), (13, 1662147), (27, 800293), (39, 554049), (117, 184683), (351, 61561)]