2187790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19889}}^1$

素因数の和:19907

約数の個数: 16

約数和(自身を含む): 4296240

約数和(自身を除く): 2108450

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 19889, 39778, 99445, 198890, 218779, 437558, 1093895, 2187790]

約数ペア:

[(1, 2187790), (2, 1093895), (5, 437558), (10, 218779), (11, 198890), (22, 99445), (55, 39778), (110, 19889)]