21131056

素因数分解:

$2^4\times {\mathrm{1049}}^1\times {\mathrm{1259}}^1$

素因数の和:2316

約数の個数: 20

約数和(自身を含む): 41013000

約数和(自身を除く): 19881944

約数列:

[1, 2, 4, 8, 16, 1049, 1259, 2098, 2518, 4196, 5036, 8392, 10072, 16784, 20144, 1320691, 2641382, 5282764, 10565528, 21131056]

約数ペア:

[(1, 21131056), (2, 10565528), (4, 5282764), (8, 2641382), (16, 1320691), (1049, 20144), (1259, 16784), (2098, 10072), (2518, 8392), (4196, 5036)]