199798840

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{16061}}^1$

素因数の和:16383

約数の個数: 32

約数和(自身を含む): 451020960

約数和(自身を除く): 251222120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440, 16061, 32122, 64244, 80305, 128488, 160610, 321220, 642440, 4994971, 9989942, 19979884, 24974855, 39959768, 49949710, 99899420, 199798840]

約数ペア:

[(1, 199798840), (2, 99899420), (4, 49949710), (5, 39959768), (8, 24974855), (10, 19979884), (20, 9989942), (40, 4994971), (311, 642440), (622, 321220), (1244, 160610), (1555, 128488), (2488, 80305), (3110, 64244), (6220, 32122), (12440, 16061)]