19413920

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1811}}^1$

素因数の和:1893

約数の個数: 48

約数和(自身を含む): 46575648

約数和(自身を除く): 27161728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1811, 2144, 2680, 3622, 5360, 7244, 9055, 10720, 14488, 18110, 28976, 36220, 57952, 72440, 121337, 144880, 242674, 289760, 485348, 606685, 970696, 1213370, 1941392, 2426740, 3882784, 4853480, 9706960, 19413920]

約数ペア:

[(1, 19413920), (2, 9706960), (4, 4853480), (5, 3882784), (8, 2426740), (10, 1941392), (16, 1213370), (20, 970696), (32, 606685), (40, 485348), (67, 289760), (80, 242674), (134, 144880), (160, 121337), (268, 72440), (335, 57952), (536, 36220), (670, 28976), (1072, 18110), (1340, 14488), (1811, 10720), (2144, 9055), (2680, 7244), (3622, 5360)]