21105728

素因数分解:

$2^6\times 7^1\times {\mathrm{47111}}^1$

素因数の和:47130

約数の個数: 28

約数和(自身を含む): 47865792

約数和(自身を除く): 26760064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 448, 47111, 94222, 188444, 329777, 376888, 659554, 753776, 1319108, 1507552, 2638216, 3015104, 5276432, 10552864, 21105728]

約数ペア:

[(1, 21105728), (2, 10552864), (4, 5276432), (7, 3015104), (8, 2638216), (14, 1507552), (16, 1319108), (28, 753776), (32, 659554), (56, 376888), (64, 329777), (112, 188444), (224, 94222), (448, 47111)]