21784514

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 35868096

約数和(自身を除く): 14083582

約数列:

[1, 2, 17, 34, 67, 73, 131, 134, 146, 262, 1139, 1241, 2227, 2278, 2482, 4454, 4891, 8777, 9563, 9782, 17554, 19126, 83147, 149209, 162571, 166294, 298418, 325142, 640721, 1281442, 10892257, 21784514]

約数ペア:

[(1, 21784514), (2, 10892257), (17, 1281442), (34, 640721), (67, 325142), (73, 298418), (131, 166294), (134, 162571), (146, 149209), (262, 83147), (1139, 19126), (1241, 17554), (2227, 9782), (2278, 9563), (2482, 8777), (4454, 4891)]