81999057

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{727}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 129153024

約数和(自身を除く): 47153967

約数列:

[1, 3, 7, 21, 41, 123, 131, 287, 393, 727, 861, 917, 2181, 2751, 5089, 5371, 15267, 16113, 29807, 37597, 89421, 95237, 112791, 208649, 285711, 625947, 666659, 1999977, 3904717, 11714151, 27333019, 81999057]

約数ペア:

[(1, 81999057), (3, 27333019), (7, 11714151), (21, 3904717), (41, 1999977), (123, 666659), (131, 625947), (287, 285711), (393, 208649), (727, 112791), (861, 95237), (917, 89421), (2181, 37597), (2751, 29807), (5089, 16113), (5371, 15267)]