80438480

素因数分解:

$2^4\times 5^1\times {\mathrm{1005481}}^1$

素因数の和:1005494

約数の個数: 20

約数和(自身を含む): 187019652

約数和(自身を除く): 106581172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1005481, 2010962, 4021924, 5027405, 8043848, 10054810, 16087696, 20109620, 40219240, 80438480]

約数ペア:

[(1, 80438480), (2, 40219240), (4, 20109620), (5, 16087696), (8, 10054810), (10, 8043848), (16, 5027405), (20, 4021924), (40, 2010962), (80, 1005481)]