80188880

素因数分解:

$2^4\times 5^1\times {\mathrm{1002361}}^1$

素因数の和:1002374

約数の個数: 20

約数和(自身を含む): 186439332

約数和(自身を除く): 106250452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1002361, 2004722, 4009444, 5011805, 8018888, 10023610, 16037776, 20047220, 40094440, 80188880]

約数ペア:

[(1, 80188880), (2, 40094440), (4, 20047220), (5, 16037776), (8, 10023610), (10, 8018888), (16, 5011805), (20, 4009444), (40, 2004722), (80, 1002361)]