20659900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{5039}}^1$

素因数の和:5094

約数の個数: 36

約数和(自身を含む): 45934560

約数和(自身を除く): 25274660

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 5039, 10078, 20156, 25195, 50390, 100780, 125975, 206599, 251950, 413198, 503900, 826396, 1032995, 2065990, 4131980, 5164975, 10329950, 20659900]

約数ペア:

[(1, 20659900), (2, 10329950), (4, 5164975), (5, 4131980), (10, 2065990), (20, 1032995), (25, 826396), (41, 503900), (50, 413198), (82, 251950), (100, 206599), (164, 125975), (205, 100780), (410, 50390), (820, 25195), (1025, 20156), (2050, 10078), (4100, 5039)]