215205121991

素因数分解:

${\mathrm{17}}^1\times {\mathrm{1087}}^1\times {\mathrm{1607}}^1\times {\mathrm{7247}}^1$

素因数の和:9958

約数の個数: 16

約数和(自身を含む): 228247289856

約数和(自身を除く): 13042167865

約数列:

[1, 17, 1087, 1607, 7247, 18479, 27319, 123199, 1746809, 7877489, 11645929, 29695753, 133917313, 197980793, 12659124823, 215205121991]

約数ペア:

[(1, 215205121991), (17, 12659124823), (1087, 197980793), (1607, 133917313), (7247, 29695753), (18479, 11645929), (27319, 7877489), (123199, 1746809)]