20808976

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31721}}^1$

素因数の和:31770

約数の個数: 20

約数和(自身を含む): 41302044

約数和(自身を除く): 20493068

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31721, 63442, 126884, 253768, 507536, 1300561, 2601122, 5202244, 10404488, 20808976]

約数ペア:

[(1, 20808976), (2, 10404488), (4, 5202244), (8, 2601122), (16, 1300561), (41, 507536), (82, 253768), (164, 126884), (328, 63442), (656, 31721)]