21617583

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 32481792

約数和(自身を除く): 10864209

約数列:

[1, 3, 13, 37, 39, 71, 111, 211, 213, 481, 633, 923, 1443, 2627, 2743, 2769, 7807, 7881, 8229, 14981, 23421, 34151, 44943, 101491, 102453, 194753, 304473, 554297, 584259, 1662891, 7205861, 21617583]

約数ペア:

[(1, 21617583), (3, 7205861), (13, 1662891), (37, 584259), (39, 554297), (71, 304473), (111, 194753), (211, 102453), (213, 101491), (481, 44943), (633, 34151), (923, 23421), (1443, 14981), (2627, 8229), (2743, 7881), (2769, 7807)]