19891312

素因数分解:

$2^4\times 7^1\times {\mathrm{177601}}^1$

素因数の和:177616

約数の個数: 20

約数和(自身を含む): 44045296

約数和(自身を除く): 24153984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 177601, 355202, 710404, 1243207, 1420808, 2486414, 2841616, 4972828, 9945656, 19891312]

約数ペア:

[(1, 19891312), (2, 9945656), (4, 4972828), (7, 2841616), (8, 2486414), (14, 1420808), (16, 1243207), (28, 710404), (56, 355202), (112, 177601)]