20351080

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2027}}^1$

素因数の和:2289

約数の個数: 32

約数和(自身を含む): 45995040

約数和(自身を除く): 25643960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2027, 2510, 4054, 5020, 8108, 10040, 10135, 16216, 20270, 40540, 81080, 508777, 1017554, 2035108, 2543885, 4070216, 5087770, 10175540, 20351080]

約数ペア:

[(1, 20351080), (2, 10175540), (4, 5087770), (5, 4070216), (8, 2543885), (10, 2035108), (20, 1017554), (40, 508777), (251, 81080), (502, 40540), (1004, 20270), (1255, 16216), (2008, 10135), (2027, 10040), (2510, 8108), (4054, 5020)]