30720989

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^3\times {\mathrm{37}}^1$

素因数の和:114

約数の個数: 24

約数和(自身を含む): 36299880

約数和(自身を除く): 5578891

約数列:

[1, 13, 17, 37, 169, 221, 289, 481, 629, 2873, 3757, 4913, 6253, 8177, 10693, 48841, 63869, 106301, 139009, 181781, 830297, 1807117, 2363153, 30720989]

約数ペア:

[(1, 30720989), (13, 2363153), (17, 1807117), (37, 830297), (169, 181781), (221, 139009), (289, 106301), (481, 63869), (629, 48841), (2873, 10693), (3757, 8177), (4913, 6253)]