80857220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139409}}^1$

素因数の和:139447

約数の個数: 24

約数和(自身を含む): 175656600

約数和(自身を除く): 94799380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 139409, 278818, 557636, 697045, 1394090, 2788180, 4042861, 8085722, 16171444, 20214305, 40428610, 80857220]

約数ペア:

[(1, 80857220), (2, 40428610), (4, 20214305), (5, 16171444), (10, 8085722), (20, 4042861), (29, 2788180), (58, 1394090), (116, 697045), (145, 557636), (290, 278818), (580, 139409)]