20501840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8837}}^1$

素因数の和:8879

約数の個数: 40

約数和(自身を含む): 49316040

約数和(自身を除く): 28814200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8837, 17674, 35348, 44185, 70696, 88370, 141392, 176740, 256273, 353480, 512546, 706960, 1025092, 1281365, 2050184, 2562730, 4100368, 5125460, 10250920, 20501840]

約数ペア:

[(1, 20501840), (2, 10250920), (4, 5125460), (5, 4100368), (8, 2562730), (10, 2050184), (16, 1281365), (20, 1025092), (29, 706960), (40, 512546), (58, 353480), (80, 256273), (116, 176740), (145, 141392), (232, 88370), (290, 70696), (464, 44185), (580, 35348), (1160, 17674), (2320, 8837)]