81506120

素因数分解:

$2^3\times 5^1\times {\mathrm{503}}^1\times {\mathrm{4051}}^1$

素因数の和:4565

約数の個数: 32

約数和(自身を含む): 183798720

約数和(自身を除く): 102292600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503, 1006, 2012, 2515, 4024, 4051, 5030, 8102, 10060, 16204, 20120, 20255, 32408, 40510, 81020, 162040, 2037653, 4075306, 8150612, 10188265, 16301224, 20376530, 40753060, 81506120]

約数ペア:

[(1, 81506120), (2, 40753060), (4, 20376530), (5, 16301224), (8, 10188265), (10, 8150612), (20, 4075306), (40, 2037653), (503, 162040), (1006, 81020), (2012, 40510), (2515, 32408), (4024, 20255), (4051, 20120), (5030, 16204), (8102, 10060)]