19991646

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1123}}^1$

素因数の和:1197

約数の個数: 48

約数和(自身を含む): 46290816

約数和(自身を除く): 26299170

約数列:

[1, 2, 3, 6, 9, 18, 23, 43, 46, 69, 86, 129, 138, 207, 258, 387, 414, 774, 989, 1123, 1978, 2246, 2967, 3369, 5934, 6738, 8901, 10107, 17802, 20214, 25829, 48289, 51658, 77487, 96578, 144867, 154974, 232461, 289734, 434601, 464922, 869202, 1110647, 2221294, 3331941, 6663882, 9995823, 19991646]

約数ペア:

[(1, 19991646), (2, 9995823), (3, 6663882), (6, 3331941), (9, 2221294), (18, 1110647), (23, 869202), (43, 464922), (46, 434601), (69, 289734), (86, 232461), (129, 154974), (138, 144867), (207, 96578), (258, 77487), (387, 51658), (414, 48289), (774, 25829), (989, 20214), (1123, 17802), (1978, 10107), (2246, 8901), (2967, 6738), (3369, 5934)]