20039383

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 25389168

約数和(自身を除く): 5349785

約数列:

[1, 7, 13, 49, 91, 163, 193, 637, 1141, 1351, 2119, 2509, 7987, 9457, 14833, 17563, 31459, 103831, 122941, 220213, 408967, 1541491, 2862769, 20039383]

約数ペア:

[(1, 20039383), (7, 2862769), (13, 1541491), (49, 408967), (91, 220213), (163, 122941), (193, 103831), (637, 31459), (1141, 17563), (1351, 14833), (2119, 9457), (2509, 7987)]