640300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{337}}^1$

素因数の和:370

約数の個数: 36

約数和(自身を含む): 1466920

約数和(自身を除く): 826620

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 337, 380, 475, 674, 950, 1348, 1685, 1900, 3370, 6403, 6740, 8425, 12806, 16850, 25612, 32015, 33700, 64030, 128060, 160075, 320150, 640300]

約数ペア:

[(1, 640300), (2, 320150), (4, 160075), (5, 128060), (10, 64030), (19, 33700), (20, 32015), (25, 25612), (38, 16850), (50, 12806), (76, 8425), (95, 6740), (100, 6403), (190, 3370), (337, 1900), (380, 1685), (475, 1348), (674, 950)]