81315423

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{31481}}^1$

素因数の和:31535

約数の個数: 24

約数和(自身を含む): 137513376

約数和(自身を除く): 56197953

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 31481, 94443, 220367, 283329, 661101, 1290721, 1983303, 3872163, 9035047, 11616489, 27105141, 81315423]

約数ペア:

[(1, 81315423), (3, 27105141), (7, 11616489), (9, 9035047), (21, 3872163), (41, 1983303), (63, 1290721), (123, 661101), (287, 283329), (369, 220367), (861, 94443), (2583, 31481)]