20266975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1109}}^1$

素因数の和:1179

約数の個数: 24

約数和(自身を含む): 27252720

約数和(自身を除く): 6985745

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1075, 1109, 3655, 5545, 18275, 18853, 27725, 47687, 94265, 238435, 471325, 810679, 1192175, 4053395, 20266975]

約数ペア:

[(1, 20266975), (5, 4053395), (17, 1192175), (25, 810679), (43, 471325), (85, 238435), (215, 94265), (425, 47687), (731, 27725), (1075, 18853), (1109, 18275), (3655, 5545)]