19971855

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26107}}^1$

素因数の和:26135

約数の個数: 24

約数和(自身を含む): 36655632

約数和(自身を除く): 16683777

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 26107, 78321, 130535, 234963, 391605, 443819, 1174815, 1331457, 2219095, 3994371, 6657285, 19971855]

約数ペア:

[(1, 19971855), (3, 6657285), (5, 3994371), (9, 2219095), (15, 1331457), (17, 1174815), (45, 443819), (51, 391605), (85, 234963), (153, 130535), (255, 78321), (765, 26107)]