19745514

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 44396352

約数和(自身を除く): 24650838

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 97, 129, 194, 258, 263, 291, 387, 526, 582, 774, 789, 873, 1578, 1746, 2367, 4171, 4734, 8342, 11309, 12513, 22618, 25026, 25511, 33927, 37539, 51022, 67854, 75078, 76533, 101781, 153066, 203562, 229599, 459198, 1096973, 2193946, 3290919, 6581838, 9872757, 19745514]

約数ペア:

[(1, 19745514), (2, 9872757), (3, 6581838), (6, 3290919), (9, 2193946), (18, 1096973), (43, 459198), (86, 229599), (97, 203562), (129, 153066), (194, 101781), (258, 76533), (263, 75078), (291, 67854), (387, 51022), (526, 37539), (582, 33927), (774, 25511), (789, 25026), (873, 22618), (1578, 12513), (1746, 11309), (2367, 8342), (4171, 4734)]