18987045

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{967}}^1$

素因数の和:1010

約数の個数: 64

約数和(自身を含む): 40144896

約数和(自身を除く): 21157851

約数列:

[1, 3, 5, 7, 11, 15, 17, 21, 33, 35, 51, 55, 77, 85, 105, 119, 165, 187, 231, 255, 357, 385, 561, 595, 935, 967, 1155, 1309, 1785, 2805, 2901, 3927, 4835, 6545, 6769, 10637, 14505, 16439, 19635, 20307, 31911, 33845, 49317, 53185, 74459, 82195, 101535, 115073, 159555, 180829, 223377, 246585, 345219, 372295, 542487, 575365, 904145, 1116885, 1265803, 1726095, 2712435, 3797409, 6329015, 18987045]

約数ペア:

[(1, 18987045), (3, 6329015), (5, 3797409), (7, 2712435), (11, 1726095), (15, 1265803), (17, 1116885), (21, 904145), (33, 575365), (35, 542487), (51, 372295), (55, 345219), (77, 246585), (85, 223377), (105, 180829), (119, 159555), (165, 115073), (187, 101535), (231, 82195), (255, 74459), (357, 53185), (385, 49317), (561, 33845), (595, 31911), (935, 20307), (967, 19635), (1155, 16439), (1309, 14505), (1785, 10637), (2805, 6769), (2901, 6545), (3927, 4835)]