131508560

素因数分解:

$2^4\times 5^1\times {\mathrm{1643857}}^1$

素因数の和:1643870

約数の個数: 20

約数和(自身を含む): 305757588

約数和(自身を除く): 174249028

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1643857, 3287714, 6575428, 8219285, 13150856, 16438570, 26301712, 32877140, 65754280, 131508560]

約数ペア:

[(1, 131508560), (2, 65754280), (4, 32877140), (5, 26301712), (8, 16438570), (10, 13150856), (16, 8219285), (20, 6575428), (40, 3287714), (80, 1643857)]