18493748

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^2$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 42467712

約数和(自身を除く): 23973964

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 47, 52, 91, 92, 94, 161, 182, 188, 299, 322, 329, 364, 598, 611, 644, 658, 1081, 1196, 1222, 1316, 2093, 2162, 2209, 2444, 4186, 4277, 4324, 4418, 7567, 8372, 8554, 8836, 14053, 15134, 15463, 17108, 28106, 28717, 30268, 30926, 50807, 56212, 57434, 61852, 98371, 101614, 114868, 196742, 201019, 203228, 355649, 393484, 402038, 660491, 711298, 804076, 1320982, 1422596, 2641964, 4623437, 9246874, 18493748]

約数ペア:

[(1, 18493748), (2, 9246874), (4, 4623437), (7, 2641964), (13, 1422596), (14, 1320982), (23, 804076), (26, 711298), (28, 660491), (46, 402038), (47, 393484), (52, 355649), (91, 203228), (92, 201019), (94, 196742), (161, 114868), (182, 101614), (188, 98371), (299, 61852), (322, 57434), (329, 56212), (364, 50807), (598, 30926), (611, 30268), (644, 28717), (658, 28106), (1081, 17108), (1196, 15463), (1222, 15134), (1316, 14053), (2093, 8836), (2162, 8554), (2209, 8372), (2444, 7567), (4186, 4418), (4277, 4324)]