21516523

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{1249}}^1$

素因数の和:1386

約数の個数: 16

約数和(自身を含む): 25920000

約数和(自身を除く): 4403477

約数列:

[1, 7, 23, 107, 161, 749, 1249, 2461, 8743, 17227, 28727, 133643, 201089, 935501, 3073789, 21516523]

約数ペア:

[(1, 21516523), (7, 3073789), (23, 935501), (107, 201089), (161, 133643), (749, 28727), (1249, 17227), (2461, 8743)]