21751400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9887}}^1$

素因数の和:9914

約数の個数: 48

約数和(自身を含む): 55175040

約数和(自身を除く): 33423640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9887, 19774, 39548, 49435, 79096, 98870, 108757, 197740, 217514, 247175, 395480, 435028, 494350, 543785, 870056, 988700, 1087570, 1977400, 2175140, 2718925, 4350280, 5437850, 10875700, 21751400]

約数ペア:

[(1, 21751400), (2, 10875700), (4, 5437850), (5, 4350280), (8, 2718925), (10, 2175140), (11, 1977400), (20, 1087570), (22, 988700), (25, 870056), (40, 543785), (44, 494350), (50, 435028), (55, 395480), (88, 247175), (100, 217514), (110, 197740), (200, 108757), (220, 98870), (275, 79096), (440, 49435), (550, 39548), (1100, 19774), (2200, 9887)]