81204080

素因数分解:

$2^4\times 5^1\times {\mathrm{1015051}}^1$

素因数の和:1015064

約数の個数: 20

約数和(自身を含む): 188799672

約数和(自身を除く): 107595592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1015051, 2030102, 4060204, 5075255, 8120408, 10150510, 16240816, 20301020, 40602040, 81204080]

約数ペア:

[(1, 81204080), (2, 40602040), (4, 20301020), (5, 16240816), (8, 10150510), (10, 8120408), (16, 5075255), (20, 4060204), (40, 2030102), (80, 1015051)]