18698589

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 35759360

約数和(自身を除く): 17060771

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 79, 91, 117, 119, 153, 221, 237, 273, 289, 357, 553, 663, 711, 819, 867, 1027, 1071, 1343, 1547, 1659, 1989, 2023, 2601, 3081, 3757, 4029, 4641, 4977, 6069, 7189, 9243, 9401, 11271, 12087, 13923, 17459, 18207, 21567, 22831, 26299, 28203, 33813, 52377, 64701, 68493, 78897, 84609, 122213, 157131, 159817, 205479, 236691, 296803, 366639, 479451, 890409, 1099917, 1438353, 2077621, 2671227, 6232863, 18698589]

約数ペア:

[(1, 18698589), (3, 6232863), (7, 2671227), (9, 2077621), (13, 1438353), (17, 1099917), (21, 890409), (39, 479451), (51, 366639), (63, 296803), (79, 236691), (91, 205479), (117, 159817), (119, 157131), (153, 122213), (221, 84609), (237, 78897), (273, 68493), (289, 64701), (357, 52377), (553, 33813), (663, 28203), (711, 26299), (819, 22831), (867, 21567), (1027, 18207), (1071, 17459), (1343, 13923), (1547, 12087), (1659, 11271), (1989, 9401), (2023, 9243), (2601, 7189), (3081, 6069), (3757, 4977), (4029, 4641)]