209748981

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{359}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 307722240

約数和(自身を除く): 97973259

約数列:

[1, 3, 13, 39, 71, 211, 213, 359, 633, 923, 1077, 2743, 2769, 4667, 8229, 14001, 14981, 25489, 44943, 75749, 76467, 194753, 227247, 331357, 584259, 984737, 994071, 2954211, 5378179, 16134537, 69916327, 209748981]

約数ペア:

[(1, 209748981), (3, 69916327), (13, 16134537), (39, 5378179), (71, 2954211), (211, 994071), (213, 984737), (359, 584259), (633, 331357), (923, 227247), (1077, 194753), (2743, 76467), (2769, 75749), (4667, 44943), (8229, 25489), (14001, 14981)]