18699970

素因数分解:

$2^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{4463}}^1$

素因数の和:4889

約数の個数: 16

約数和(自身を含む): 33747840

約数和(自身を除く): 15047870

約数列:

[1, 2, 5, 10, 419, 838, 2095, 4190, 4463, 8926, 22315, 44630, 1869997, 3739994, 9349985, 18699970]

約数ペア:

[(1, 18699970), (2, 9349985), (5, 3739994), (10, 1869997), (419, 44630), (838, 22315), (2095, 8926), (4190, 4463)]