2019020

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{643}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 4273584

約数和(自身を除く): 2254564

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 643, 785, 1286, 1570, 2572, 3140, 3215, 6430, 12860, 100951, 201902, 403804, 504755, 1009510, 2019020]

約数ペア:

[(1, 2019020), (2, 1009510), (4, 504755), (5, 403804), (10, 201902), (20, 100951), (157, 12860), (314, 6430), (628, 3215), (643, 3140), (785, 2572), (1286, 1570)]