19977554

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1\times {\mathrm{523}}^1$

素因数の和:865

約数の個数: 16

約数和(自身を含む): 30559680

約数和(自身を除く): 10582126

約数列:

[1, 2, 71, 142, 269, 523, 538, 1046, 19099, 37133, 38198, 74266, 140687, 281374, 9988777, 19977554]

約数ペア:

[(1, 19977554), (2, 9988777), (71, 281374), (142, 140687), (269, 74266), (523, 38198), (538, 37133), (1046, 19099)]