81819969

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 142829568

約数和(自身を除く): 61009599

約数列:

[1, 3, 7, 11, 21, 33, 41, 53, 77, 123, 159, 163, 231, 287, 371, 451, 489, 583, 861, 1113, 1141, 1353, 1749, 1793, 2173, 3157, 3423, 4081, 5379, 6519, 6683, 8639, 9471, 12243, 12551, 15211, 20049, 23903, 25917, 37653, 45633, 46781, 60473, 71709, 73513, 95029, 140343, 167321, 181419, 220539, 285087, 354199, 501963, 514591, 665203, 1062597, 1543773, 1995609, 2479393, 3896189, 7438179, 11688567, 27273323, 81819969]

約数ペア:

[(1, 81819969), (3, 27273323), (7, 11688567), (11, 7438179), (21, 3896189), (33, 2479393), (41, 1995609), (53, 1543773), (77, 1062597), (123, 665203), (159, 514591), (163, 501963), (231, 354199), (287, 285087), (371, 220539), (451, 181419), (489, 167321), (583, 140343), (861, 95029), (1113, 73513), (1141, 71709), (1353, 60473), (1749, 46781), (1793, 45633), (2173, 37653), (3157, 25917), (3423, 23903), (4081, 20049), (5379, 15211), (6519, 12551), (6683, 12243), (8639, 9471)]