19561636

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{68879}}^1$

素因数の和:68954

約数の個数: 12

約数和(自身を含む): 34715520

約数和(自身を除く): 15153884

約数列:

[1, 2, 4, 71, 142, 284, 68879, 137758, 275516, 4890409, 9780818, 19561636]

約数ペア:

[(1, 19561636), (2, 9780818), (4, 4890409), (71, 275516), (142, 137758), (284, 68879)]