281386721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{117883}}^1$

素因数の和:117932

約数の個数: 16

約数和(自身を含む): 362139648

約数和(自身を除く): 80752927

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 117883, 825181, 1296713, 3654373, 9076991, 25580611, 40198103, 281386721]

約数ペア:

[(1, 281386721), (7, 40198103), (11, 25580611), (31, 9076991), (77, 3654373), (217, 1296713), (341, 825181), (2387, 117883)]