78681987

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{2087}}^1$

素因数の和:2223

約数の個数: 24

約数和(自身を含む): 117262080

約数和(自身を除く): 38580093

約数列:

[1, 3, 9, 59, 71, 177, 213, 531, 639, 2087, 4189, 6261, 12567, 18783, 37701, 123133, 148177, 369399, 444531, 1108197, 1333593, 8742443, 26227329, 78681987]

約数ペア:

[(1, 78681987), (3, 26227329), (9, 8742443), (59, 1333593), (71, 1108197), (177, 444531), (213, 369399), (531, 148177), (639, 123133), (2087, 37701), (4189, 18783), (6261, 12567)]