20556249

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 32624640

約数和(自身を除く): 12068391

約数列:

[1, 3, 7, 21, 47, 59, 141, 177, 329, 353, 413, 987, 1059, 1239, 2471, 2773, 7413, 8319, 16591, 19411, 20827, 49773, 58233, 62481, 116137, 145789, 348411, 437367, 978869, 2936607, 6852083, 20556249]

約数ペア:

[(1, 20556249), (3, 6852083), (7, 2936607), (21, 978869), (47, 437367), (59, 348411), (141, 145789), (177, 116137), (329, 62481), (353, 58233), (413, 49773), (987, 20827), (1059, 19411), (1239, 16591), (2471, 8319), (2773, 7413)]