21250775

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9341}}^1$

素因数の和:9371

約数の個数: 24

約数和(自身を含む): 32435424

約数和(自身を除く): 11184649

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9341, 46705, 65387, 121433, 233525, 326935, 607165, 850031, 1634675, 3035825, 4250155, 21250775]

約数ペア:

[(1, 21250775), (5, 4250155), (7, 3035825), (13, 1634675), (25, 850031), (35, 607165), (65, 326935), (91, 233525), (175, 121433), (325, 65387), (455, 46705), (2275, 9341)]