18518859

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 27567072

約数和(自身を除く): 9048213

約数列:

[1, 3, 9, 71, 73, 213, 219, 397, 639, 657, 1191, 3573, 5183, 15549, 28187, 28981, 46647, 84561, 86943, 253683, 260829, 2057651, 6172953, 18518859]

約数ペア:

[(1, 18518859), (3, 6172953), (9, 2057651), (71, 260829), (73, 253683), (213, 86943), (219, 84561), (397, 46647), (639, 28981), (657, 28187), (1191, 15549), (3573, 5183)]