28528006

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 53222400

約数和(自身を除く): 24694394

約数列:

[1, 2, 13, 17, 19, 26, 34, 38, 43, 79, 86, 158, 221, 247, 323, 442, 494, 559, 646, 731, 817, 1027, 1118, 1343, 1462, 1501, 1634, 2054, 2686, 3002, 3397, 4199, 6794, 8398, 9503, 10621, 13889, 17459, 19006, 19513, 21242, 25517, 27778, 34918, 39026, 44161, 51034, 57749, 64543, 88322, 115498, 129086, 180557, 331721, 361114, 663442, 750737, 839059, 1097231, 1501474, 1678118, 2194462, 14264003, 28528006]

約数ペア:

[(1, 28528006), (2, 14264003), (13, 2194462), (17, 1678118), (19, 1501474), (26, 1097231), (34, 839059), (38, 750737), (43, 663442), (79, 361114), (86, 331721), (158, 180557), (221, 129086), (247, 115498), (323, 88322), (442, 64543), (494, 57749), (559, 51034), (646, 44161), (731, 39026), (817, 34918), (1027, 27778), (1118, 25517), (1343, 21242), (1462, 19513), (1501, 19006), (1634, 17459), (2054, 13889), (2686, 10621), (3002, 9503), (3397, 8398), (4199, 6794)]