81103840

素因数分解:

$2^5\times 5^1\times {\mathrm{506899}}^1$

素因数の和:506914

約数の個数: 24

約数和(自身を含む): 191608200

約数和(自身を除く): 110504360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 506899, 1013798, 2027596, 2534495, 4055192, 5068990, 8110384, 10137980, 16220768, 20275960, 40551920, 81103840]

約数ペア:

[(1, 81103840), (2, 40551920), (4, 20275960), (5, 16220768), (8, 10137980), (10, 8110384), (16, 5068990), (20, 4055192), (32, 2534495), (40, 2027596), (80, 1013798), (160, 506899)]