19998486

素因数分解:

$2^1\times 3^2\times {\mathrm{139}}^1\times {\mathrm{7993}}^1$

素因数の和:8140

約数の個数: 24

約数和(自身を含む): 43647240

約数和(自身を除く): 23648754

約数列:

[1, 2, 3, 6, 9, 18, 139, 278, 417, 834, 1251, 2502, 7993, 15986, 23979, 47958, 71937, 143874, 1111027, 2222054, 3333081, 6666162, 9999243, 19998486]

約数ペア:

[(1, 19998486), (2, 9999243), (3, 6666162), (6, 3333081), (9, 2222054), (18, 1111027), (139, 143874), (278, 71937), (417, 47958), (834, 23979), (1251, 15986), (2502, 7993)]