19986448

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{54311}}^1$

素因数の和:54342

約数の個数: 20

約数和(自身を含む): 40408128

約数和(自身を除く): 20421680

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 54311, 108622, 217244, 434488, 868976, 1249153, 2498306, 4996612, 9993224, 19986448]

約数ペア:

[(1, 19986448), (2, 9993224), (4, 4996612), (8, 2498306), (16, 1249153), (23, 868976), (46, 434488), (92, 217244), (184, 108622), (368, 54311)]