18781204

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{5087}}^1$

素因数の和:5175

約数の個数: 24

約数和(自身を含む): 35900928

約数和(自身を除く): 17119724

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 5087, 10174, 20348, 66131, 132262, 264524, 361177, 722354, 1444708, 4695301, 9390602, 18781204]

約数ペア:

[(1, 18781204), (2, 9390602), (4, 4695301), (13, 1444708), (26, 722354), (52, 361177), (71, 264524), (142, 132262), (284, 66131), (923, 20348), (1846, 10174), (3692, 5087)]