981872

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:680

約数の個数: 20

約数和(自身を含む): 1923240

約数和(自身を除く): 941368

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 563, 872, 1126, 1744, 2252, 4504, 9008, 61367, 122734, 245468, 490936, 981872]

約数ペア:

[(1, 981872), (2, 490936), (4, 245468), (8, 122734), (16, 61367), (109, 9008), (218, 4504), (436, 2252), (563, 1744), (872, 1126)]