28528227

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{683}}^1$

素因数の和:729

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 26629533

約数列:

[1, 3, 7, 9, 13, 17, 21, 27, 39, 51, 63, 91, 117, 119, 153, 189, 221, 273, 351, 357, 459, 663, 683, 819, 1071, 1547, 1989, 2049, 2457, 3213, 4641, 4781, 5967, 6147, 8879, 11611, 13923, 14343, 18441, 26637, 34833, 41769, 43029, 62153, 79911, 81277, 104499, 129087, 150943, 186459, 239733, 243831, 313497, 452829, 559377, 731493, 1056601, 1358487, 1678131, 2194479, 3169803, 4075461, 9509409, 28528227]

約数ペア:

[(1, 28528227), (3, 9509409), (7, 4075461), (9, 3169803), (13, 2194479), (17, 1678131), (21, 1358487), (27, 1056601), (39, 731493), (51, 559377), (63, 452829), (91, 313497), (117, 243831), (119, 239733), (153, 186459), (189, 150943), (221, 129087), (273, 104499), (351, 81277), (357, 79911), (459, 62153), (663, 43029), (683, 41769), (819, 34833), (1071, 26637), (1547, 18441), (1989, 14343), (2049, 13923), (2457, 11611), (3213, 8879), (4641, 6147), (4781, 5967)]