20447427

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{619}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 36942080

約数和(自身を除く): 16494653

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 121, 143, 231, 273, 363, 429, 619, 847, 1001, 1573, 1857, 2541, 3003, 4333, 4719, 6809, 8047, 11011, 12999, 20427, 24141, 33033, 47663, 56329, 74899, 88517, 142989, 168987, 224697, 265551, 524293, 619619, 973687, 1572879, 1858857, 2921061, 6815809, 20447427]

約数ペア:

[(1, 20447427), (3, 6815809), (7, 2921061), (11, 1858857), (13, 1572879), (21, 973687), (33, 619619), (39, 524293), (77, 265551), (91, 224697), (121, 168987), (143, 142989), (231, 88517), (273, 74899), (363, 56329), (429, 47663), (619, 33033), (847, 24141), (1001, 20427), (1573, 12999), (1857, 11011), (2541, 8047), (3003, 6809), (4333, 4719)]