20648761

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:273

約数の個数: 24

約数和(自身を含む): 25640640

約数和(自身を除く): 4991879

約数列:

[1, 7, 17, 59, 119, 173, 289, 413, 1003, 1211, 2023, 2941, 7021, 10207, 17051, 20587, 49997, 71449, 119357, 173519, 349979, 1214633, 2949823, 20648761]

約数ペア:

[(1, 20648761), (7, 2949823), (17, 1214633), (59, 349979), (119, 173519), (173, 119357), (289, 71449), (413, 49997), (1003, 20587), (1211, 17051), (2023, 10207), (2941, 7021)]