201798765

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{640631}}^1$

素因数の和:640649

約数の個数: 24

約数和(自身を含む): 399754368

約数和(自身を除く): 197955603

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 640631, 1921893, 3203155, 4484417, 5765679, 9609465, 13453251, 22422085, 28828395, 40359753, 67266255, 201798765]

約数ペア:

[(1, 201798765), (3, 67266255), (5, 40359753), (7, 28828395), (9, 22422085), (15, 13453251), (21, 9609465), (35, 5765679), (45, 4484417), (63, 3203155), (105, 1921893), (315, 640631)]