87777680

素因数分解:

$2^4\times 5^1\times {\mathrm{1097221}}^1$

素因数の和:1097234

約数の個数: 20

約数和(自身を含む): 204083292

約数和(自身を除く): 116305612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1097221, 2194442, 4388884, 5486105, 8777768, 10972210, 17555536, 21944420, 43888840, 87777680]

約数ペア:

[(1, 87777680), (2, 43888840), (4, 21944420), (5, 17555536), (8, 10972210), (10, 8777768), (16, 5486105), (20, 4388884), (40, 2194442), (80, 1097221)]