16278381

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2003}}^1$

素因数の和:2062

約数の個数: 32

約数和(自身を含む): 28216320

約数和(自身を除く): 11937939

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2003, 2709, 6009, 8127, 14021, 18027, 42063, 54081, 86129, 126189, 258387, 378567, 602903, 775161, 1808709, 2325483, 5426127, 16278381]

約数ペア:

[(1, 16278381), (3, 5426127), (7, 2325483), (9, 1808709), (21, 775161), (27, 602903), (43, 378567), (63, 258387), (129, 126189), (189, 86129), (301, 54081), (387, 42063), (903, 18027), (1161, 14021), (2003, 8127), (2709, 6009)]