21050920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47843}}^1$

素因数の和:47865

約数の個数: 32

約数和(自身を含む): 51671520

約数和(自身を除く): 30620600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47843, 95686, 191372, 239215, 382744, 478430, 526273, 956860, 1052546, 1913720, 2105092, 2631365, 4210184, 5262730, 10525460, 21050920]

約数ペア:

[(1, 21050920), (2, 10525460), (4, 5262730), (5, 4210184), (8, 2631365), (10, 2105092), (11, 1913720), (20, 1052546), (22, 956860), (40, 526273), (44, 478430), (55, 382744), (88, 239215), (110, 191372), (220, 95686), (440, 47843)]