20321949

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{5557}}^1$

素因数の和:5636

約数の個数: 16

約数和(自身を含む): 28812672

約数和(自身を除く): 8490723

約数列:

[1, 3, 23, 53, 69, 159, 1219, 3657, 5557, 16671, 127811, 294521, 383433, 883563, 6773983, 20321949]

約数ペア:

[(1, 20321949), (3, 6773983), (23, 883563), (53, 383433), (69, 294521), (159, 127811), (1219, 16671), (3657, 5557)]