20178774

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:263

約数の個数: 128

約数和(自身を含む): 58613760

約数和(自身を除く): 38434986

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 23, 27, 33, 42, 46, 54, 63, 66, 69, 77, 99, 126, 138, 154, 161, 189, 198, 207, 211, 231, 253, 297, 322, 378, 414, 422, 462, 483, 506, 594, 621, 633, 693, 759, 966, 1242, 1266, 1386, 1449, 1477, 1518, 1771, 1899, 2079, 2277, 2321, 2898, 2954, 3542, 3798, 4158, 4347, 4431, 4554, 4642, 4853, 5313, 5697, 6831, 6963, 8694, 8862, 9706, 10626, 11394, 13293, 13662, 13926, 14559, 15939, 16247, 20889, 26586, 29118, 31878, 32494, 33971, 39879, 41778, 43677, 47817, 48741, 53383, 62667, 67942, 79758, 87354, 95634, 97482, 101913, 106766, 125334, 131031, 146223, 160149, 203826, 262062, 292446, 305739, 320298, 373681, 438669, 480447, 611478, 747362, 877338, 917217, 960894, 1121043, 1441341, 1834434, 2242086, 2882682, 3363129, 6726258, 10089387, 20178774]

約数ペア:

[(1, 20178774), (2, 10089387), (3, 6726258), (6, 3363129), (7, 2882682), (9, 2242086), (11, 1834434), (14, 1441341), (18, 1121043), (21, 960894), (22, 917217), (23, 877338), (27, 747362), (33, 611478), (42, 480447), (46, 438669), (54, 373681), (63, 320298), (66, 305739), (69, 292446), (77, 262062), (99, 203826), (126, 160149), (138, 146223), (154, 131031), (161, 125334), (189, 106766), (198, 101913), (207, 97482), (211, 95634), (231, 87354), (253, 79758), (297, 67942), (322, 62667), (378, 53383), (414, 48741), (422, 47817), (462, 43677), (483, 41778), (506, 39879), (594, 33971), (621, 32494), (633, 31878), (693, 29118), (759, 26586), (966, 20889), (1242, 16247), (1266, 15939), (1386, 14559), (1449, 13926), (1477, 13662), (1518, 13293), (1771, 11394), (1899, 10626), (2079, 9706), (2277, 8862), (2321, 8694), (2898, 6963), (2954, 6831), (3542, 5697), (3798, 5313), (4158, 4853), (4347, 4642), (4431, 4554)]