21761955

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28447}}^1$

素因数の和:28475

約数の個数: 24

約数和(自身を含む): 39940992

約数和(自身を除く): 18179037

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28447, 85341, 142235, 256023, 426705, 483599, 1280115, 1450797, 2417995, 4352391, 7253985, 21761955]

約数ペア:

[(1, 21761955), (3, 7253985), (5, 4352391), (9, 2417995), (15, 1450797), (17, 1280115), (45, 483599), (51, 426705), (85, 256023), (153, 142235), (255, 85341), (765, 28447)]