21164464

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{5147}}^1$

素因数の和:5412

約数の個数: 20

約数和(自身を含む): 41173704

約数和(自身を除く): 20009240

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 5147, 10294, 20588, 41176, 82352, 1322779, 2645558, 5291116, 10582232, 21164464]

約数ペア:

[(1, 21164464), (2, 10582232), (4, 5291116), (8, 2645558), (16, 1322779), (257, 82352), (514, 41176), (1028, 20588), (2056, 10294), (4112, 5147)]