20884304

素因数分解:

$2^4\times 7^1\times {\mathrm{263}}^1\times {\mathrm{709}}^1$

素因数の和:987

約数の個数: 40

約数和(自身を含む): 46485120

約数和(自身を除く): 25600816

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 263, 526, 709, 1052, 1418, 1841, 2104, 2836, 3682, 4208, 4963, 5672, 7364, 9926, 11344, 14728, 19852, 29456, 39704, 79408, 186467, 372934, 745868, 1305269, 1491736, 2610538, 2983472, 5221076, 10442152, 20884304]

約数ペア:

[(1, 20884304), (2, 10442152), (4, 5221076), (7, 2983472), (8, 2610538), (14, 1491736), (16, 1305269), (28, 745868), (56, 372934), (112, 186467), (263, 79408), (526, 39704), (709, 29456), (1052, 19852), (1418, 14728), (1841, 11344), (2104, 9926), (2836, 7364), (3682, 5672), (4208, 4963)]