20644317

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 34070400

約数和(自身を除く): 13426083

約数列:

[1, 3, 9, 19, 23, 29, 57, 69, 87, 171, 181, 207, 261, 437, 543, 551, 667, 1311, 1629, 1653, 2001, 3439, 3933, 4163, 4959, 5249, 6003, 10317, 12489, 12673, 15747, 30951, 37467, 38019, 47241, 79097, 99731, 114057, 120727, 237291, 299193, 362181, 711873, 897579, 1086543, 2293813, 6881439, 20644317]

約数ペア:

[(1, 20644317), (3, 6881439), (9, 2293813), (19, 1086543), (23, 897579), (29, 711873), (57, 362181), (69, 299193), (87, 237291), (171, 120727), (181, 114057), (207, 99731), (261, 79097), (437, 47241), (543, 38019), (551, 37467), (667, 30951), (1311, 15747), (1629, 12673), (1653, 12489), (2001, 10317), (3439, 6003), (3933, 5249), (4163, 4959)]