78231881

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{643}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 98671104

約数和(自身を除く): 20439223

約数列:

[1, 7, 13, 49, 91, 191, 637, 643, 1337, 2483, 4501, 8359, 9359, 17381, 31507, 58513, 121667, 122813, 409591, 859691, 1596569, 6017837, 11175983, 78231881]

約数ペア:

[(1, 78231881), (7, 11175983), (13, 6017837), (49, 1596569), (91, 859691), (191, 409591), (637, 122813), (643, 121667), (1337, 58513), (2483, 31507), (4501, 17381), (8359, 9359)]