19940090

素因数分解:

$2^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4441}}^1$

素因数の和:4897

約数の個数: 16

約数和(自身を含む): 35980200

約数和(自身を除く): 16040110

約数列:

[1, 2, 5, 10, 449, 898, 2245, 4441, 4490, 8882, 22205, 44410, 1994009, 3988018, 9970045, 19940090]

約数ペア:

[(1, 19940090), (2, 9970045), (5, 3988018), (10, 1994009), (449, 44410), (898, 22205), (2245, 8882), (4441, 4490)]