20515517

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{619}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 23569920

約数和(自身を除く): 3054403

約数列:

[1, 11, 23, 131, 253, 619, 1441, 3013, 6809, 14237, 33143, 81089, 156607, 891979, 1865047, 20515517]

約数ペア:

[(1, 20515517), (11, 1865047), (23, 891979), (131, 156607), (253, 81089), (619, 33143), (1441, 14237), (3013, 6809)]