18503840

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1061}}^1$

素因数の和:1185

約数の個数: 48

約数和(自身を含む): 44157960

約数和(自身を除く): 25654120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 872, 1061, 1090, 1744, 2122, 2180, 3488, 4244, 4360, 5305, 8488, 8720, 10610, 16976, 17440, 21220, 33952, 42440, 84880, 115649, 169760, 231298, 462596, 578245, 925192, 1156490, 1850384, 2312980, 3700768, 4625960, 9251920, 18503840]

約数ペア:

[(1, 18503840), (2, 9251920), (4, 4625960), (5, 3700768), (8, 2312980), (10, 1850384), (16, 1156490), (20, 925192), (32, 578245), (40, 462596), (80, 231298), (109, 169760), (160, 115649), (218, 84880), (436, 42440), (545, 33952), (872, 21220), (1061, 17440), (1090, 16976), (1744, 10610), (2122, 8720), (2180, 8488), (3488, 5305), (4244, 4360)]