209531385

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{665179}}^1$

素因数の和:665197

約数の個数: 24

約数和(自身を含む): 415072320

約数和(自身を除く): 205540935

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 665179, 1995537, 3325895, 4656253, 5986611, 9977685, 13968759, 23281265, 29933055, 41906277, 69843795, 209531385]

約数ペア:

[(1, 209531385), (3, 69843795), (5, 41906277), (7, 29933055), (9, 23281265), (15, 13968759), (21, 9977685), (35, 5986611), (45, 4656253), (63, 3325895), (105, 1995537), (315, 665179)]