20861138

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9649}}^1$

素因数の和:9721

約数の個数: 16

約数和(自身を含む): 33350400

約数和(自身を除く): 12489262

約数列:

[1, 2, 23, 46, 47, 94, 1081, 2162, 9649, 19298, 221927, 443854, 453503, 907006, 10430569, 20861138]

約数ペア:

[(1, 20861138), (2, 10430569), (23, 907006), (46, 453503), (47, 443854), (94, 221927), (1081, 19298), (2162, 9649)]