221481

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{631}}^1$

素因数の和:653

約数の個数: 16

約数和(自身を含む): 353920

約数和(自身を除く): 132439

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 631, 1893, 5679, 8203, 17037, 24609, 73827, 221481]

約数ペア:

[(1, 221481), (3, 73827), (9, 24609), (13, 17037), (27, 8203), (39, 5679), (117, 1893), (351, 631)]