2181080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4957}}^1$

素因数の和:4979

約数の個数: 32

約数和(自身を含む): 5354640

約数和(自身を除く): 3173560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 4957, 9914, 19828, 24785, 39656, 49570, 54527, 99140, 109054, 198280, 218108, 272635, 436216, 545270, 1090540, 2181080]

約数ペア:

[(1, 2181080), (2, 1090540), (4, 545270), (5, 436216), (8, 272635), (10, 218108), (11, 198280), (20, 109054), (22, 99140), (40, 54527), (44, 49570), (55, 39656), (88, 24785), (110, 19828), (220, 9914), (440, 4957)]