1388259

素因数分解:

$3^5\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 2162160

約数和(自身を除く): 773901

約数列:

[1, 3, 9, 27, 29, 81, 87, 197, 243, 261, 591, 783, 1773, 2349, 5319, 5713, 7047, 15957, 17139, 47871, 51417, 154251, 462753, 1388259]

約数ペア:

[(1, 1388259), (3, 462753), (9, 154251), (27, 51417), (29, 47871), (81, 17139), (87, 15957), (197, 7047), (243, 5713), (261, 5319), (591, 2349), (783, 1773)]