21326080

素因数分解:

$2^8\times 5^1\times {\mathrm{16661}}^1$

素因数の和:16682

約数の個数: 36

約数和(自身を含む): 51085692

約数和(自身を除く): 29759612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16661, 33322, 66644, 83305, 133288, 166610, 266576, 333220, 533152, 666440, 1066304, 1332880, 2132608, 2665760, 4265216, 5331520, 10663040, 21326080]

約数ペア:

[(1, 21326080), (2, 10663040), (4, 5331520), (5, 4265216), (8, 2665760), (10, 2132608), (16, 1332880), (20, 1066304), (32, 666440), (40, 533152), (64, 333220), (80, 266576), (128, 166610), (160, 133288), (256, 83305), (320, 66644), (640, 33322), (1280, 16661)]