20765857

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 25941384

約数和(自身を除く): 5175527

約数列:

[1, 7, 17, 49, 97, 119, 257, 679, 833, 1649, 1799, 4369, 4753, 11543, 12593, 24929, 30583, 80801, 174503, 214081, 423793, 1221521, 2966551, 20765857]

約数ペア:

[(1, 20765857), (7, 2966551), (17, 1221521), (49, 423793), (97, 214081), (119, 174503), (257, 80801), (679, 30583), (833, 24929), (1649, 12593), (1799, 11543), (4369, 4753)]