20325080

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4001}}^1$

素因数の和:4139

約数の個数: 32

約数和(自身を含む): 46103040

約数和(自身を除く): 25777960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 4001, 5080, 8002, 16004, 20005, 32008, 40010, 80020, 160040, 508127, 1016254, 2032508, 2540635, 4065016, 5081270, 10162540, 20325080]

約数ペア:

[(1, 20325080), (2, 10162540), (4, 5081270), (5, 4065016), (8, 2540635), (10, 2032508), (20, 1016254), (40, 508127), (127, 160040), (254, 80020), (508, 40010), (635, 32008), (1016, 20005), (1270, 16004), (2540, 8002), (4001, 5080)]