80881587520

素因数分解:

$2^6\times 5^1\times {\mathrm{252754961}}^1$

素因数の和:252754978

約数の個数: 28

約数和(自身を含む): 192599281044

約数和(自身を除く): 111717693524

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 252754961, 505509922, 1011019844, 1263774805, 2022039688, 2527549610, 4044079376, 5055099220, 8088158752, 10110198440, 16176317504, 20220396880, 40440793760, 80881587520]

約数ペア:

[(1, 80881587520), (2, 40440793760), (4, 20220396880), (5, 16176317504), (8, 10110198440), (10, 8088158752), (16, 5055099220), (20, 4044079376), (32, 2527549610), (40, 2022039688), (64, 1263774805), (80, 1011019844), (160, 505509922), (320, 252754961)]