27955557

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 22732443

約数列:

[1, 3, 7, 9, 21, 23, 27, 59, 63, 69, 109, 161, 177, 189, 207, 327, 413, 483, 531, 621, 763, 981, 1239, 1357, 1449, 1593, 2289, 2507, 2943, 3717, 4071, 4347, 6431, 6867, 7521, 9499, 11151, 12213, 17549, 19293, 20601, 22563, 28497, 36639, 45017, 52647, 57879, 67689, 85491, 135051, 147913, 157941, 173637, 256473, 405153, 443739, 473823, 1035391, 1215459, 1331217, 3106173, 3993651, 9318519, 27955557]

約数ペア:

[(1, 27955557), (3, 9318519), (7, 3993651), (9, 3106173), (21, 1331217), (23, 1215459), (27, 1035391), (59, 473823), (63, 443739), (69, 405153), (109, 256473), (161, 173637), (177, 157941), (189, 147913), (207, 135051), (327, 85491), (413, 67689), (483, 57879), (531, 52647), (621, 45017), (763, 36639), (981, 28497), (1239, 22563), (1357, 20601), (1449, 19293), (1593, 17549), (2289, 12213), (2507, 11151), (2943, 9499), (3717, 7521), (4071, 6867), (4347, 6431)]