20797749

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6473}}^1$

素因数の和:6506

約数の個数: 32

約数和(自身を含む): 37290240

約数和(自身を除く): 16492491

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6473, 19419, 45311, 58257, 110041, 135933, 174771, 330123, 407799, 770287, 990369, 1223397, 2310861, 2971107, 6932583, 20797749]

約数ペア:

[(1, 20797749), (3, 6932583), (7, 2971107), (9, 2310861), (17, 1223397), (21, 990369), (27, 770287), (51, 407799), (63, 330123), (119, 174771), (153, 135933), (189, 110041), (357, 58257), (459, 45311), (1071, 19419), (3213, 6473)]