19937982

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{77279}}^1$

素因数の和:77327

約数の個数: 16

約数和(自身を含む): 40803840

約数和(自身を除く): 20865858

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 77279, 154558, 231837, 463674, 3322997, 6645994, 9968991, 19937982]

約数ペア:

[(1, 19937982), (2, 9968991), (3, 6645994), (6, 3322997), (43, 463674), (86, 231837), (129, 154558), (258, 77279)]