291220040

素因数分解:

$2^3\times 5^1\times {\mathrm{1759}}^1\times {\mathrm{4139}}^1$

素因数の和:5909

約数の個数: 32

約数和(自身を含む): 655776000

約数和(自身を除く): 364555960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1759, 3518, 4139, 7036, 8278, 8795, 14072, 16556, 17590, 20695, 33112, 35180, 41390, 70360, 82780, 165560, 7280501, 14561002, 29122004, 36402505, 58244008, 72805010, 145610020, 291220040]

約数ペア:

[(1, 291220040), (2, 145610020), (4, 72805010), (5, 58244008), (8, 36402505), (10, 29122004), (20, 14561002), (40, 7280501), (1759, 165560), (3518, 82780), (4139, 70360), (7036, 41390), (8278, 35180), (8795, 33112), (14072, 20695), (16556, 17590)]