20934279

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{181}}^2$

素因数の和:439

約数の個数: 18

約数和(自身を含む): 30834648

約数和(自身を除く): 9900369

約数列:

[1, 3, 9, 71, 181, 213, 543, 639, 1629, 12851, 32761, 38553, 98283, 115659, 294849, 2326031, 6978093, 20934279]

約数ペア:

[(1, 20934279), (3, 6978093), (9, 2326031), (71, 294849), (181, 115659), (213, 98283), (543, 38553), (639, 32761), (1629, 12851)]