20025440

素因数分解:

$2^5\times 5^1\times {\mathrm{257}}^1\times {\mathrm{487}}^1$

素因数の和:759

約数の個数: 48

約数和(自身を含む): 47591712

約数和(自身を除く): 27566272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 257, 487, 514, 974, 1028, 1285, 1948, 2056, 2435, 2570, 3896, 4112, 4870, 5140, 7792, 8224, 9740, 10280, 15584, 19480, 20560, 38960, 41120, 77920, 125159, 250318, 500636, 625795, 1001272, 1251590, 2002544, 2503180, 4005088, 5006360, 10012720, 20025440]

約数ペア:

[(1, 20025440), (2, 10012720), (4, 5006360), (5, 4005088), (8, 2503180), (10, 2002544), (16, 1251590), (20, 1001272), (32, 625795), (40, 500636), (80, 250318), (160, 125159), (257, 77920), (487, 41120), (514, 38960), (974, 20560), (1028, 19480), (1285, 15584), (1948, 10280), (2056, 9740), (2435, 8224), (2570, 7792), (3896, 5140), (4112, 4870)]