20162679280

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{722159}}^1$

素因数の和:722521

約数の個数: 40

約数和(自身を含む): 47012616000

約数和(自身を除く): 26849936720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 698, 1396, 1745, 2792, 3490, 5584, 6980, 13960, 27920, 722159, 1444318, 2888636, 3610795, 5777272, 7221590, 11554544, 14443180, 28886360, 57772720, 252033491, 504066982, 1008133964, 1260167455, 2016267928, 2520334910, 4032535856, 5040669820, 10081339640, 20162679280]

約数ペア:

[(1, 20162679280), (2, 10081339640), (4, 5040669820), (5, 4032535856), (8, 2520334910), (10, 2016267928), (16, 1260167455), (20, 1008133964), (40, 504066982), (80, 252033491), (349, 57772720), (698, 28886360), (1396, 14443180), (1745, 11554544), (2792, 7221590), (3490, 5777272), (5584, 3610795), (6980, 2888636), (13960, 1444318), (27920, 722159)]