20801157040

素因数分解:

$2^4\times 5^1\times {\mathrm{260014463}}^1$

素因数の和:260014476

約数の個数: 20

約数和(自身を含む): 48362690304

約数和(自身を除く): 27561533264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260014463, 520028926, 1040057852, 1300072315, 2080115704, 2600144630, 4160231408, 5200289260, 10400578520, 20801157040]

約数ペア:

[(1, 20801157040), (2, 10400578520), (4, 5200289260), (5, 4160231408), (8, 2600144630), (10, 2080115704), (16, 1300072315), (20, 1040057852), (40, 520028926), (80, 260014463)]