20005221

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2677}}^1$

素因数の和:2780

約数の個数: 16

約数和(自身を含む): 27765504

約数和(自身を除く): 7760283

約数列:

[1, 3, 47, 53, 141, 159, 2491, 2677, 7473, 8031, 125819, 141881, 377457, 425643, 6668407, 20005221]

約数ペア:

[(1, 20005221), (3, 6668407), (47, 425643), (53, 377457), (141, 141881), (159, 125819), (2491, 8031), (2677, 7473)]