20981512

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{25463}}^1$

素因数の和:25572

約数の個数: 16

約数和(自身を含む): 39723840

約数和(自身を除く): 18742328

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 25463, 50926, 101852, 203704, 2622689, 5245378, 10490756, 20981512]

約数ペア:

[(1, 20981512), (2, 10490756), (4, 5245378), (8, 2622689), (103, 203704), (206, 101852), (412, 50926), (824, 25463)]