20744320

素因数分解:

$2^7\times 5^1\times {\mathrm{32413}}^1$

素因数の和:32432

約数の個数: 32

約数和(自身を含む): 49593420

約数和(自身を除く): 28849100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32413, 64826, 129652, 162065, 259304, 324130, 518608, 648260, 1037216, 1296520, 2074432, 2593040, 4148864, 5186080, 10372160, 20744320]

約数ペア:

[(1, 20744320), (2, 10372160), (4, 5186080), (5, 4148864), (8, 2593040), (10, 2074432), (16, 1296520), (20, 1037216), (32, 648260), (40, 518608), (64, 324130), (80, 259304), (128, 162065), (160, 129652), (320, 64826), (640, 32413)]