21810800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4957}}^1$

素因数の和:4986

約数の個数: 60

約数和(自身を含む): 57175656

約数和(自身を除く): 35364856

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4957, 9914, 19828, 24785, 39656, 49570, 54527, 79312, 99140, 109054, 123925, 198280, 218108, 247850, 272635, 396560, 436216, 495700, 545270, 872432, 991400, 1090540, 1363175, 1982800, 2181080, 2726350, 4362160, 5452700, 10905400, 21810800]

約数ペア:

[(1, 21810800), (2, 10905400), (4, 5452700), (5, 4362160), (8, 2726350), (10, 2181080), (11, 1982800), (16, 1363175), (20, 1090540), (22, 991400), (25, 872432), (40, 545270), (44, 495700), (50, 436216), (55, 396560), (80, 272635), (88, 247850), (100, 218108), (110, 198280), (176, 123925), (200, 109054), (220, 99140), (275, 79312), (400, 54527), (440, 49570), (550, 39656), (880, 24785), (1100, 19828), (2200, 9914), (4400, 4957)]