1991158

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:208

約数の個数: 24

約数和(自身を含む): 3333528

約数和(自身を除く): 1342370

約数列:

[1, 2, 13, 26, 43, 86, 137, 169, 274, 338, 559, 1118, 1781, 3562, 5891, 7267, 11782, 14534, 23153, 46306, 76583, 153166, 995579, 1991158]

約数ペア:

[(1, 1991158), (2, 995579), (13, 153166), (26, 76583), (43, 46306), (86, 23153), (137, 14534), (169, 11782), (274, 7267), (338, 5891), (559, 3562), (1118, 1781)]