21097976

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{18973}}^1$

素因数の和:19118

約数の個数: 16

約数和(自身を含む): 39845400

約数和(自身を除く): 18747424

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 18973, 37946, 75892, 151784, 2637247, 5274494, 10548988, 21097976]

約数ペア:

[(1, 21097976), (2, 10548988), (4, 5274494), (8, 2637247), (139, 151784), (278, 75892), (556, 37946), (1112, 18973)]