81567400

素因数分解:

$2^3\times 5^2\times {\mathrm{617}}^1\times {\mathrm{661}}^1$

素因数の和:1294

約数の個数: 48

約数和(自身を含む): 190238940

約数和(自身を除く): 108671540

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 617, 661, 1234, 1322, 2468, 2644, 3085, 3305, 4936, 5288, 6170, 6610, 12340, 13220, 15425, 16525, 24680, 26440, 30850, 33050, 61700, 66100, 123400, 132200, 407837, 815674, 1631348, 2039185, 3262696, 4078370, 8156740, 10195925, 16313480, 20391850, 40783700, 81567400]

約数ペア:

[(1, 81567400), (2, 40783700), (4, 20391850), (5, 16313480), (8, 10195925), (10, 8156740), (20, 4078370), (25, 3262696), (40, 2039185), (50, 1631348), (100, 815674), (200, 407837), (617, 132200), (661, 123400), (1234, 66100), (1322, 61700), (2468, 33050), (2644, 30850), (3085, 26440), (3305, 24680), (4936, 16525), (5288, 15425), (6170, 13220), (6610, 12340)]