21496816

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1823}}^1$

素因数の和:1909

約数の個数: 40

約数和(自身を含む): 46139904

約数和(自身を除く): 24643088

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 67, 88, 134, 176, 268, 536, 737, 1072, 1474, 1823, 2948, 3646, 5896, 7292, 11792, 14584, 20053, 29168, 40106, 80212, 122141, 160424, 244282, 320848, 488564, 977128, 1343551, 1954256, 2687102, 5374204, 10748408, 21496816]

約数ペア:

[(1, 21496816), (2, 10748408), (4, 5374204), (8, 2687102), (11, 1954256), (16, 1343551), (22, 977128), (44, 488564), (67, 320848), (88, 244282), (134, 160424), (176, 122141), (268, 80212), (536, 40106), (737, 29168), (1072, 20053), (1474, 14584), (1823, 11792), (2948, 7292), (3646, 5896)]