20852500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:482

約数の個数: 60

約数和(自身を含む): 48109600

約数和(自身を除く): 27257100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 439, 475, 500, 625, 878, 950, 1250, 1756, 1900, 2195, 2375, 2500, 4390, 4750, 8341, 8780, 9500, 10975, 11875, 16682, 21950, 23750, 33364, 41705, 43900, 47500, 54875, 83410, 109750, 166820, 208525, 219500, 274375, 417050, 548750, 834100, 1042625, 1097500, 2085250, 4170500, 5213125, 10426250, 20852500]

約数ペア:

[(1, 20852500), (2, 10426250), (4, 5213125), (5, 4170500), (10, 2085250), (19, 1097500), (20, 1042625), (25, 834100), (38, 548750), (50, 417050), (76, 274375), (95, 219500), (100, 208525), (125, 166820), (190, 109750), (250, 83410), (380, 54875), (439, 47500), (475, 43900), (500, 41705), (625, 33364), (878, 23750), (950, 21950), (1250, 16682), (1756, 11875), (1900, 10975), (2195, 9500), (2375, 8780), (2500, 8341), (4390, 4750)]