20168720020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{275003}}^1$

素因数の和:275224

約数の個数: 48

約数和(自身を含む): 44814651840

約数和(自身を除く): 24645931820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 193, 380, 386, 772, 965, 1930, 3667, 3860, 7334, 14668, 18335, 36670, 73340, 275003, 550006, 1100012, 1375015, 2750030, 5225057, 5500060, 10450114, 20900228, 26125285, 52250570, 53075579, 104501140, 106151158, 212302316, 265377895, 530755790, 1008436001, 1061511580, 2016872002, 4033744004, 5042180005, 10084360010, 20168720020]

約数ペア:

[(1, 20168720020), (2, 10084360010), (4, 5042180005), (5, 4033744004), (10, 2016872002), (19, 1061511580), (20, 1008436001), (38, 530755790), (76, 265377895), (95, 212302316), (190, 106151158), (193, 104501140), (380, 53075579), (386, 52250570), (772, 26125285), (965, 20900228), (1930, 10450114), (3667, 5500060), (3860, 5225057), (7334, 2750030), (14668, 1375015), (18335, 1100012), (36670, 550006), (73340, 275003)]