766665

素因数分解:

$3^5\times 5^1\times {\mathrm{631}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 1380288

約数和(自身を除く): 613623

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 631, 1215, 1893, 3155, 5679, 9465, 17037, 28395, 51111, 85185, 153333, 255555, 766665]

約数ペア:

[(1, 766665), (3, 255555), (5, 153333), (9, 85185), (15, 51111), (27, 28395), (45, 17037), (81, 9465), (135, 5679), (243, 3155), (405, 1893), (631, 1215)]