20278503

素因数分解:

$3^2\times 7^3\times {\mathrm{6569}}^1$

素因数の和:6596

約数の個数: 24

約数和(自身を含む): 34164000

約数和(自身を除く): 13885497

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6569, 19707, 45983, 59121, 137949, 321881, 413847, 965643, 2253167, 2896929, 6759501, 20278503]

約数ペア:

[(1, 20278503), (3, 6759501), (7, 2896929), (9, 2253167), (21, 965643), (49, 413847), (63, 321881), (147, 137949), (343, 59121), (441, 45983), (1029, 19707), (3087, 6569)]