20257029681

素因数分解:

$3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{199}}^1\times {\mathrm{6353}}^1$

素因数の和:6678

約数の個数: 48

約数和(自身を含む): 31871664000

約数和(自身を除く): 11614634319

約数列:

[1, 3, 7, 21, 49, 109, 147, 199, 327, 597, 763, 1393, 2289, 4179, 5341, 6353, 9751, 16023, 19059, 21691, 29253, 44471, 65073, 133413, 151837, 311297, 455511, 692477, 933891, 1062859, 1264247, 2077431, 3188577, 3792741, 4847339, 8849729, 14542017, 26549187, 33931373, 61948103, 101794119, 137802923, 185844309, 413408769, 964620461, 2893861383, 6752343227, 20257029681]

約数ペア:

[(1, 20257029681), (3, 6752343227), (7, 2893861383), (21, 964620461), (49, 413408769), (109, 185844309), (147, 137802923), (199, 101794119), (327, 61948103), (597, 33931373), (763, 26549187), (1393, 14542017), (2289, 8849729), (4179, 4847339), (5341, 3792741), (6353, 3188577), (9751, 2077431), (16023, 1264247), (19059, 1062859), (21691, 933891), (29253, 692477), (44471, 455511), (65073, 311297), (133413, 151837)]