20809468799

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{643}}^1\times {\mathrm{3407}}^1$

素因数の和:4139

約数の個数: 32

約数和(自身を含む): 25283543040

約数和(自身を除く): 4474074241

約数列:

[1, 7, 23, 59, 161, 413, 643, 1357, 3407, 4501, 9499, 14789, 23849, 37937, 78361, 103523, 201013, 265559, 548527, 872551, 1407091, 2190701, 4623299, 6107857, 15334907, 32363093, 50386123, 129251359, 352702861, 904759513, 2972781257, 20809468799]

約数ペア:

[(1, 20809468799), (7, 2972781257), (23, 904759513), (59, 352702861), (161, 129251359), (413, 50386123), (643, 32363093), (1357, 15334907), (3407, 6107857), (4501, 4623299), (9499, 2190701), (14789, 1407091), (23849, 872551), (37937, 548527), (78361, 265559), (103523, 201013)]