28403990

素因数分解:

$2^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{3511}}^1$

素因数の和:4327

約数の個数: 16

約数和(自身を含む): 51204960

約数和(自身を除く): 22800970

約数列:

[1, 2, 5, 10, 809, 1618, 3511, 4045, 7022, 8090, 17555, 35110, 2840399, 5680798, 14201995, 28403990]

約数ペア:

[(1, 28403990), (2, 14201995), (5, 5680798), (10, 2840399), (809, 35110), (1618, 17555), (3511, 8090), (4045, 7022)]