21027808

素因数分解:

$2^5\times {\mathrm{509}}^1\times {\mathrm{1291}}^1$

素因数の和:1810

約数の個数: 24

約数和(自身を含む): 41511960

約数和(自身を除く): 20484152

約数列:

[1, 2, 4, 8, 16, 32, 509, 1018, 1291, 2036, 2582, 4072, 5164, 8144, 10328, 16288, 20656, 41312, 657119, 1314238, 2628476, 5256952, 10513904, 21027808]

約数ペア:

[(1, 21027808), (2, 10513904), (4, 5256952), (8, 2628476), (16, 1314238), (32, 657119), (509, 41312), (1018, 20656), (1291, 16288), (2036, 10328), (2582, 8144), (4072, 5164)]