18636415

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 27989280

約数和(自身を除く): 9352865

約数列:

[1, 5, 7, 29, 35, 43, 49, 61, 145, 203, 215, 245, 301, 305, 427, 1015, 1247, 1421, 1505, 1769, 2107, 2135, 2623, 2989, 6235, 7105, 8729, 8845, 10535, 12383, 13115, 14945, 18361, 43645, 61103, 61915, 76067, 86681, 91805, 128527, 305515, 380335, 433405, 532469, 642635, 2662345, 3727283, 18636415]

約数ペア:

[(1, 18636415), (5, 3727283), (7, 2662345), (29, 642635), (35, 532469), (43, 433405), (49, 380335), (61, 305515), (145, 128527), (203, 91805), (215, 86681), (245, 76067), (301, 61915), (305, 61103), (427, 43645), (1015, 18361), (1247, 14945), (1421, 13115), (1505, 12383), (1769, 10535), (2107, 8845), (2135, 8729), (2623, 7105), (2989, 6235)]