18979976

素因数分解:

$2^3\times {\mathrm{223}}^1\times {\mathrm{10639}}^1$

素因数の和:10868

約数の個数: 16

約数和(自身を含む): 35750400

約数和(自身を除く): 16770424

約数列:

[1, 2, 4, 8, 223, 446, 892, 1784, 10639, 21278, 42556, 85112, 2372497, 4744994, 9489988, 18979976]

約数ペア:

[(1, 18979976), (2, 9489988), (4, 4744994), (8, 2372497), (223, 85112), (446, 42556), (892, 21278), (1784, 10639)]