20128312

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 39715200

約数和(自身を除く): 19586888

約数列:

[1, 2, 4, 8, 23, 46, 92, 139, 184, 278, 556, 787, 1112, 1574, 3148, 3197, 6296, 6394, 12788, 18101, 25576, 36202, 72404, 109393, 144808, 218786, 437572, 875144, 2516039, 5032078, 10064156, 20128312]

約数ペア:

[(1, 20128312), (2, 10064156), (4, 5032078), (8, 2516039), (23, 875144), (46, 437572), (92, 218786), (139, 144808), (184, 109393), (278, 72404), (556, 36202), (787, 25576), (1112, 18101), (1574, 12788), (3148, 6394), (3197, 6296)]