16128440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9377}}^1$

素因数の和:9431

約数の個数: 32

約数和(自身を含む): 37136880

約数和(自身を除く): 21008440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 9377, 18754, 37508, 46885, 75016, 93770, 187540, 375080, 403211, 806422, 1612844, 2016055, 3225688, 4032110, 8064220, 16128440]

約数ペア:

[(1, 16128440), (2, 8064220), (4, 4032110), (5, 3225688), (8, 2016055), (10, 1612844), (20, 806422), (40, 403211), (43, 375080), (86, 187540), (172, 93770), (215, 75016), (344, 46885), (430, 37508), (860, 18754), (1720, 9377)]