87489020

素因数分解:

$2^2\times 5^1\times {\mathrm{4374451}}^1$

素因数の和:4374460

約数の個数: 12

約数和(自身を含む): 183726984

約数和(自身を除く): 96237964

約数列:

[1, 2, 4, 5, 10, 20, 4374451, 8748902, 17497804, 21872255, 43744510, 87489020]

約数ペア:

[(1, 87489020), (2, 43744510), (4, 21872255), (5, 17497804), (10, 8748902), (20, 4374451)]