21006838

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{1123}}^1$

素因数の和:1371

約数の個数: 16

約数和(自身を含む): 32371200

約数和(自身を除く): 11364362

約数列:

[1, 2, 47, 94, 199, 398, 1123, 2246, 9353, 18706, 52781, 105562, 223477, 446954, 10503419, 21006838]

約数ペア:

[(1, 21006838), (2, 10503419), (47, 446954), (94, 223477), (199, 105562), (398, 52781), (1123, 18706), (2246, 9353)]