18679984

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{10711}}^1$

素因数の和:10828

約数の個数: 20

約数和(自身を含む): 36527920

約数和(自身を除く): 17847936

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 10711, 21422, 42844, 85688, 171376, 1167499, 2334998, 4669996, 9339992, 18679984]

約数ペア:

[(1, 18679984), (2, 9339992), (4, 4669996), (8, 2334998), (16, 1167499), (109, 171376), (218, 85688), (436, 42844), (872, 21422), (1744, 10711)]