21453255

素因数分解:

$3^5\times 5^1\times {\mathrm{17657}}^1$

素因数の和:17677

約数の個数: 24

約数和(自身を含む): 38565072

約数和(自身を除く): 17111817

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17657, 52971, 88285, 158913, 264855, 476739, 794565, 1430217, 2383695, 4290651, 7151085, 21453255]

約数ペア:

[(1, 21453255), (3, 7151085), (5, 4290651), (9, 2383695), (15, 1430217), (27, 794565), (45, 476739), (81, 264855), (135, 158913), (243, 88285), (405, 52971), (1215, 17657)]