18958390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 40227840

約数和(自身を除く): 21269450

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 47, 55, 94, 95, 110, 190, 193, 209, 235, 386, 418, 470, 517, 893, 965, 1034, 1045, 1786, 1930, 2090, 2123, 2585, 3667, 4246, 4465, 5170, 7334, 8930, 9071, 9823, 10615, 18142, 18335, 19646, 21230, 36670, 40337, 45355, 49115, 80674, 90710, 98230, 99781, 172349, 199562, 201685, 344698, 403370, 498905, 861745, 997810, 1723490, 1895839, 3791678, 9479195, 18958390]

約数ペア:

[(1, 18958390), (2, 9479195), (5, 3791678), (10, 1895839), (11, 1723490), (19, 997810), (22, 861745), (38, 498905), (47, 403370), (55, 344698), (94, 201685), (95, 199562), (110, 172349), (190, 99781), (193, 98230), (209, 90710), (235, 80674), (386, 49115), (418, 45355), (470, 40337), (517, 36670), (893, 21230), (965, 19646), (1034, 18335), (1045, 18142), (1786, 10615), (1930, 9823), (2090, 9071), (2123, 8930), (2585, 7334), (3667, 5170), (4246, 4465)]