20109550

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4519}}^1$

素因数の和:4620

約数の個数: 24

約数和(自身を含む): 37832400

約数和(自身を除く): 17722850

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4519, 9038, 22595, 45190, 112975, 225950, 402191, 804382, 2010955, 4021910, 10054775, 20109550]

約数ペア:

[(1, 20109550), (2, 10054775), (5, 4021910), (10, 2010955), (25, 804382), (50, 402191), (89, 225950), (178, 112975), (445, 45190), (890, 22595), (2225, 9038), (4450, 4519)]