280310025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{219851}}^1$

素因数の和:219881

約数の個数: 24

約数和(自身を含む): 490709664

約数和(自身を除く): 210399639

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 219851, 659553, 1099255, 3297765, 3737467, 5496275, 11212401, 16488825, 18687335, 56062005, 93436675, 280310025]

約数ペア:

[(1, 280310025), (3, 93436675), (5, 56062005), (15, 18687335), (17, 16488825), (25, 11212401), (51, 5496275), (75, 3737467), (85, 3297765), (255, 1099255), (425, 659553), (1275, 219851)]