81768344

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^2\times {\mathrm{661}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 179296080

約数和(自身を除く): 97527736

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 661, 1316, 1322, 2209, 2632, 2644, 4418, 4627, 5288, 8836, 9254, 15463, 17672, 18508, 30926, 31067, 37016, 61852, 62134, 123704, 124268, 217469, 248536, 434938, 869876, 1460149, 1739752, 2920298, 5840596, 10221043, 11681192, 20442086, 40884172, 81768344]

約数ペア:

[(1, 81768344), (2, 40884172), (4, 20442086), (7, 11681192), (8, 10221043), (14, 5840596), (28, 2920298), (47, 1739752), (56, 1460149), (94, 869876), (188, 434938), (329, 248536), (376, 217469), (658, 124268), (661, 123704), (1316, 62134), (1322, 61852), (2209, 37016), (2632, 31067), (2644, 30926), (4418, 18508), (4627, 17672), (5288, 15463), (8836, 9254)]