20794633520

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1870021}}^1$

素因数の和:1870173

約数の個数: 40

約数和(自身を含む): 48695372880

約数和(自身を除く): 27900739360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 1870021, 3740042, 7480084, 9350105, 14960168, 18700210, 29920336, 37400420, 74800840, 149601680, 259932919, 519865838, 1039731676, 1299664595, 2079463352, 2599329190, 4158926704, 5198658380, 10397316760, 20794633520]

約数ペア:

[(1, 20794633520), (2, 10397316760), (4, 5198658380), (5, 4158926704), (8, 2599329190), (10, 2079463352), (16, 1299664595), (20, 1039731676), (40, 519865838), (80, 259932919), (139, 149601680), (278, 74800840), (556, 37400420), (695, 29920336), (1112, 18700210), (1390, 14960168), (2224, 9350105), (2780, 7480084), (5560, 3740042), (11120, 1870021)]