80398460

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{9157}}^1$

素因数の和:9605

約数の個数: 24

約数和(自身を含む): 169239840

約数和(自身を除く): 88841380

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780, 9157, 18314, 36628, 45785, 91570, 183140, 4019923, 8039846, 16079692, 20099615, 40199230, 80398460]

約数ペア:

[(1, 80398460), (2, 40199230), (4, 20099615), (5, 16079692), (10, 8039846), (20, 4019923), (439, 183140), (878, 91570), (1756, 45785), (2195, 36628), (4390, 18314), (8780, 9157)]