21133931

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3271}}^1$

素因数の和:3362

約数の個数: 16

約数和(自身を含む): 26385408

約数和(自身を除く): 5251477

約数列:

[1, 7, 13, 71, 91, 497, 923, 3271, 6461, 22897, 42523, 232241, 297661, 1625687, 3019133, 21133931]

約数ペア:

[(1, 21133931), (7, 3019133), (13, 1625687), (71, 297661), (91, 232241), (497, 42523), (923, 22897), (3271, 6461)]