87681998

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{21169}}^1$

素因数の和:21299

約数の個数: 16

約数和(自身を含む): 139722000

約数和(自身を除く): 52040002

約数列:

[1, 2, 19, 38, 109, 218, 2071, 4142, 21169, 42338, 402211, 804422, 2307421, 4614842, 43840999, 87681998]

約数ペア:

[(1, 87681998), (2, 43840999), (19, 4614842), (38, 2307421), (109, 804422), (218, 402211), (2071, 42338), (4142, 21169)]