2189177960

素因数分解:

$2^3\times 5^1\times {\mathrm{9949}}^1\times {\mathrm{5501}}^1$

素因数の和:15461

約数の個数: 32

約数和(自身を含む): 4927041000

約数和(自身を除く): 2737863040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5501, 9949, 11002, 19898, 22004, 27505, 39796, 44008, 49745, 55010, 79592, 99490, 110020, 198980, 220040, 397960, 54729449, 109458898, 218917796, 273647245, 437835592, 547294490, 1094588980, 2189177960]

約数ペア:

[(1, 2189177960), (2, 1094588980), (4, 547294490), (5, 437835592), (8, 273647245), (10, 218917796), (20, 109458898), (40, 54729449), (5501, 397960), (9949, 220040), (11002, 198980), (19898, 110020), (22004, 99490), (27505, 79592), (39796, 55010), (44008, 49745)]