19938078

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{15601}}^1$

素因数の和:15680

約数の個数: 24

約数和(自身を含む): 43810416

約数和(自身を除く): 23872338

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 15601, 31202, 46803, 93606, 140409, 280818, 1107671, 2215342, 3323013, 6646026, 9969039, 19938078]

約数ペア:

[(1, 19938078), (2, 9969039), (3, 6646026), (6, 3323013), (9, 2215342), (18, 1107671), (71, 280818), (142, 140409), (213, 93606), (426, 46803), (639, 31202), (1278, 15601)]