155128840

素因数分解:

$2^3\times 5^1\times {\mathrm{3878221}}^1$

素因数の和:3878232

約数の個数: 16

約数和(自身を含む): 349039980

約数和(自身を除く): 193911140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3878221, 7756442, 15512884, 19391105, 31025768, 38782210, 77564420, 155128840]

約数ペア:

[(1, 155128840), (2, 77564420), (4, 38782210), (5, 31025768), (8, 19391105), (10, 15512884), (20, 7756442), (40, 3878221)]