19728650

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{1093}}^1$

素因数の和:1143

約数の個数: 36

約数和(自身を含む): 38763702

約数和(自身を除く): 19035052

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 361, 475, 722, 950, 1093, 1805, 2186, 3610, 5465, 9025, 10930, 18050, 20767, 27325, 41534, 54650, 103835, 207670, 394573, 519175, 789146, 1038350, 1972865, 3945730, 9864325, 19728650]

約数ペア:

[(1, 19728650), (2, 9864325), (5, 3945730), (10, 1972865), (19, 1038350), (25, 789146), (38, 519175), (50, 394573), (95, 207670), (190, 103835), (361, 54650), (475, 41534), (722, 27325), (950, 20767), (1093, 18050), (1805, 10930), (2186, 9025), (3610, 5465)]