7987987

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 9529344

約数和(自身を除く): 1541357

約数列:

[1, 7, 31, 131, 217, 281, 917, 1967, 4061, 8711, 28427, 36811, 60977, 257677, 1141141, 7987987]

約数ペア:

[(1, 7987987), (7, 1141141), (31, 257677), (131, 60977), (217, 36811), (281, 28427), (917, 8711), (1967, 4061)]