18680739

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 33841152

約数和(自身を除く): 15160413

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 67, 71, 77, 119, 187, 201, 213, 231, 357, 469, 497, 561, 737, 781, 1139, 1207, 1309, 1407, 1491, 2211, 2343, 3417, 3621, 3927, 4757, 5159, 5467, 7973, 8449, 12529, 13277, 14271, 15477, 16401, 23919, 25347, 33299, 37587, 39831, 52327, 80869, 87703, 92939, 99897, 156981, 242607, 263109, 278817, 366289, 566083, 889559, 1098867, 1698249, 2668677, 6226913, 18680739]

約数ペア:

[(1, 18680739), (3, 6226913), (7, 2668677), (11, 1698249), (17, 1098867), (21, 889559), (33, 566083), (51, 366289), (67, 278817), (71, 263109), (77, 242607), (119, 156981), (187, 99897), (201, 92939), (213, 87703), (231, 80869), (357, 52327), (469, 39831), (497, 37587), (561, 33299), (737, 25347), (781, 23919), (1139, 16401), (1207, 15477), (1309, 14271), (1407, 13277), (1491, 12529), (2211, 8449), (2343, 7973), (3417, 5467), (3621, 5159), (3927, 4757)]