21052160

素因数分解:

$2^8\times 5^1\times {\mathrm{16447}}^1$

素因数の和:16468

約数の個数: 36

約数和(自身を含む): 50429568

約数和(自身を除く): 29377408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16447, 32894, 65788, 82235, 131576, 164470, 263152, 328940, 526304, 657880, 1052608, 1315760, 2105216, 2631520, 4210432, 5263040, 10526080, 21052160]

約数ペア:

[(1, 21052160), (2, 10526080), (4, 5263040), (5, 4210432), (8, 2631520), (10, 2105216), (16, 1315760), (20, 1052608), (32, 657880), (40, 526304), (64, 328940), (80, 263152), (128, 164470), (160, 131576), (256, 82235), (320, 65788), (640, 32894), (1280, 16447)]