21554481

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12853}}^1$

素因数の和:12912

約数の個数: 16

約数和(自身を含む): 31672256

約数和(自身を除く): 10117775

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12853, 38559, 167089, 501267, 552679, 1658037, 7184827, 21554481]

約数ペア:

[(1, 21554481), (3, 7184827), (13, 1658037), (39, 552679), (43, 501267), (129, 167089), (559, 38559), (1677, 12853)]