19747196

素因数分解:

$2^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 41496000

約数和(自身を除く): 21748804

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 343, 389, 518, 686, 778, 1036, 1372, 1556, 1813, 2723, 3626, 5446, 7252, 10892, 12691, 14393, 19061, 25382, 28786, 38122, 50764, 57572, 76244, 100751, 133427, 201502, 266854, 403004, 533708, 705257, 1410514, 2821028, 4936799, 9873598, 19747196]

約数ペア:

[(1, 19747196), (2, 9873598), (4, 4936799), (7, 2821028), (14, 1410514), (28, 705257), (37, 533708), (49, 403004), (74, 266854), (98, 201502), (148, 133427), (196, 100751), (259, 76244), (343, 57572), (389, 50764), (518, 38122), (686, 28786), (778, 25382), (1036, 19061), (1372, 14393), (1556, 12691), (1813, 10892), (2723, 7252), (3626, 5446)]