20974250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 23504470

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 125, 145, 250, 263, 275, 290, 319, 526, 550, 638, 725, 1315, 1375, 1450, 1595, 2630, 2750, 2893, 3190, 3625, 5786, 6575, 7250, 7627, 7975, 13150, 14465, 15254, 15950, 28930, 32875, 38135, 39875, 65750, 72325, 76270, 79750, 83897, 144650, 167794, 190675, 361625, 381350, 419485, 723250, 838970, 953375, 1906750, 2097425, 4194850, 10487125, 20974250]

約数ペア:

[(1, 20974250), (2, 10487125), (5, 4194850), (10, 2097425), (11, 1906750), (22, 953375), (25, 838970), (29, 723250), (50, 419485), (55, 381350), (58, 361625), (110, 190675), (125, 167794), (145, 144650), (250, 83897), (263, 79750), (275, 76270), (290, 72325), (319, 65750), (526, 39875), (550, 38135), (638, 32875), (725, 28930), (1315, 15950), (1375, 15254), (1450, 14465), (1595, 13150), (2630, 7975), (2750, 7627), (2893, 7250), (3190, 6575), (3625, 5786)]