9780040

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1759}}^1$

素因数の和:1909

約数の個数: 32

約数和(自身を含む): 22176000

約数和(自身を除く): 12395960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 1759, 2780, 3518, 5560, 7036, 8795, 14072, 17590, 35180, 70360, 244501, 489002, 978004, 1222505, 1956008, 2445010, 4890020, 9780040]

約数ペア:

[(1, 9780040), (2, 4890020), (4, 2445010), (5, 1956008), (8, 1222505), (10, 978004), (20, 489002), (40, 244501), (139, 70360), (278, 35180), (556, 17590), (695, 14072), (1112, 8795), (1390, 7036), (1759, 5560), (2780, 3518)]