20120221180

素因数分解:

$2^2\times 5^1\times {\mathrm{1006011059}}^1$

素因数の和:1006011068

約数の個数: 12

約数和(自身を含む): 42252464520

約数和(自身を除く): 22132243340

約数列:

[1, 2, 4, 5, 10, 20, 1006011059, 2012022118, 4024044236, 5030055295, 10060110590, 20120221180]

約数ペア:

[(1, 20120221180), (2, 10060110590), (4, 5030055295), (5, 4024044236), (10, 2012022118), (20, 1006011059)]