20035720

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1949}}^1$

素因数の和:2217

約数の個数: 32

約数和(自身を含む): 45279000

約数和(自身を除く): 25243280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1949, 2056, 2570, 3898, 5140, 7796, 9745, 10280, 15592, 19490, 38980, 77960, 500893, 1001786, 2003572, 2504465, 4007144, 5008930, 10017860, 20035720]

約数ペア:

[(1, 20035720), (2, 10017860), (4, 5008930), (5, 4007144), (8, 2504465), (10, 2003572), (20, 1001786), (40, 500893), (257, 77960), (514, 38980), (1028, 19490), (1285, 15592), (1949, 10280), (2056, 9745), (2570, 7796), (3898, 5140)]