20903800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5501}}^1$

素因数の和:5536

約数の個数: 48

約数和(自身を含む): 51168600

約数和(自身を除く): 30264800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5501, 11002, 22004, 27505, 44008, 55010, 104519, 110020, 137525, 209038, 220040, 275050, 418076, 522595, 550100, 836152, 1045190, 1100200, 2090380, 2612975, 4180760, 5225950, 10451900, 20903800]

約数ペア:

[(1, 20903800), (2, 10451900), (4, 5225950), (5, 4180760), (8, 2612975), (10, 2090380), (19, 1100200), (20, 1045190), (25, 836152), (38, 550100), (40, 522595), (50, 418076), (76, 275050), (95, 220040), (100, 209038), (152, 137525), (190, 110020), (200, 104519), (380, 55010), (475, 44008), (760, 27505), (950, 22004), (1900, 11002), (3800, 5501)]