20607587

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 29992032

約数和(自身を除く): 9384445

約数列:

[1, 7, 11, 13, 17, 49, 77, 91, 119, 143, 173, 187, 221, 539, 637, 833, 1001, 1211, 1309, 1547, 1903, 2249, 2431, 2941, 7007, 8477, 9163, 10829, 13321, 15743, 17017, 20587, 24739, 32351, 38233, 93247, 110201, 119119, 144109, 173173, 226457, 267631, 420563, 1212211, 1585199, 1873417, 2943941, 20607587]

約数ペア:

[(1, 20607587), (7, 2943941), (11, 1873417), (13, 1585199), (17, 1212211), (49, 420563), (77, 267631), (91, 226457), (119, 173173), (143, 144109), (173, 119119), (187, 110201), (221, 93247), (539, 38233), (637, 32351), (833, 24739), (1001, 20587), (1211, 17017), (1309, 15743), (1547, 13321), (1903, 10829), (2249, 9163), (2431, 8477), (2941, 7007)]