20803744

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1163}}^1$

素因数の和:1229

約数の個数: 48

約数和(自身を含む): 45172512

約数和(自身を除く): 24368768

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 86, 104, 172, 208, 344, 416, 559, 688, 1118, 1163, 1376, 2236, 2326, 4472, 4652, 8944, 9304, 15119, 17888, 18608, 30238, 37216, 50009, 60476, 100018, 120952, 200036, 241904, 400072, 483808, 650117, 800144, 1300234, 1600288, 2600468, 5200936, 10401872, 20803744]

約数ペア:

[(1, 20803744), (2, 10401872), (4, 5200936), (8, 2600468), (13, 1600288), (16, 1300234), (26, 800144), (32, 650117), (43, 483808), (52, 400072), (86, 241904), (104, 200036), (172, 120952), (208, 100018), (344, 60476), (416, 50009), (559, 37216), (688, 30238), (1118, 18608), (1163, 17888), (1376, 15119), (2236, 9304), (2326, 8944), (4472, 4652)]