21120376

素因数分解:

$2^3\times {\mathrm{193}}^1\times {\mathrm{13679}}^1$

素因数の和:13878

約数の個数: 16

約数和(自身を含む): 39808800

約数和(自身を除く): 18688424

約数列:

[1, 2, 4, 8, 193, 386, 772, 1544, 13679, 27358, 54716, 109432, 2640047, 5280094, 10560188, 21120376]

約数ペア:

[(1, 21120376), (2, 10560188), (4, 5280094), (8, 2640047), (193, 109432), (386, 54716), (772, 27358), (1544, 13679)]