20688990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{98519}}^1$

素因数の和:98536

約数の個数: 32

約数和(自身を含む): 56747520

約数和(自身を除く): 36058530

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 98519, 197038, 295557, 492595, 591114, 689633, 985190, 1379266, 1477785, 2068899, 2955570, 3448165, 4137798, 6896330, 10344495, 20688990]

約数ペア:

[(1, 20688990), (2, 10344495), (3, 6896330), (5, 4137798), (6, 3448165), (7, 2955570), (10, 2068899), (14, 1477785), (15, 1379266), (21, 985190), (30, 689633), (35, 591114), (42, 492595), (70, 295557), (105, 197038), (210, 98519)]