21463605

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28057}}^1$

素因数の和:28085

約数の個数: 24

約数和(自身を含む): 39393432

約数和(自身を除く): 17929827

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28057, 84171, 140285, 252513, 420855, 476969, 1262565, 1430907, 2384845, 4292721, 7154535, 21463605]

約数ペア:

[(1, 21463605), (3, 7154535), (5, 4292721), (9, 2384845), (15, 1430907), (17, 1262565), (45, 476969), (51, 420855), (85, 252513), (153, 140285), (255, 84171), (765, 28057)]