19869213

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{997}}^1$

素因数の和:1093

約数の個数: 32

約数和(自身を含む): 33085696

約数和(自身を除く): 13216483

約数列:

[1, 3, 7, 13, 21, 39, 73, 91, 219, 273, 511, 949, 997, 1533, 2847, 2991, 6643, 6979, 12961, 19929, 20937, 38883, 72781, 90727, 218343, 272181, 509467, 946153, 1528401, 2838459, 6623071, 19869213]

約数ペア:

[(1, 19869213), (3, 6623071), (7, 2838459), (13, 1528401), (21, 946153), (39, 509467), (73, 272181), (91, 218343), (219, 90727), (273, 72781), (511, 38883), (949, 20937), (997, 19929), (1533, 12961), (2847, 6979), (2991, 6643)]