21745688

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{51287}}^1$

素因数の和:51346

約数の個数: 16

約数和(自身を含む): 41543280

約数和(自身を除く): 19797592

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 51287, 102574, 205148, 410296, 2718211, 5436422, 10872844, 21745688]

約数ペア:

[(1, 21745688), (2, 10872844), (4, 5436422), (8, 2718211), (53, 410296), (106, 205148), (212, 102574), (424, 51287)]