81523897

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:470

約数の個数: 32

約数和(自身を含む): 104832000

約数和(自身を除く): 23308103

約数列:

[1, 7, 13, 47, 49, 91, 329, 343, 389, 611, 637, 2303, 2723, 4277, 4459, 5057, 16121, 18283, 19061, 29939, 35399, 127981, 133427, 209573, 237679, 247793, 895867, 1663753, 1734551, 6271069, 11646271, 81523897]

約数ペア:

[(1, 81523897), (7, 11646271), (13, 6271069), (47, 1734551), (49, 1663753), (91, 895867), (329, 247793), (343, 237679), (389, 209573), (611, 133427), (637, 127981), (2303, 35399), (2723, 29939), (4277, 19061), (4459, 18283), (5057, 16121)]