20267984

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{29}}^1$

素因数の和:97

約数の個数: 90

約数和(自身を含む): 47125890

約数和(自身を除く): 26857906

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 29, 38, 44, 58, 76, 88, 116, 121, 152, 176, 209, 232, 242, 304, 319, 361, 418, 464, 484, 551, 638, 722, 836, 968, 1102, 1276, 1444, 1672, 1936, 2204, 2299, 2552, 2888, 3344, 3509, 3971, 4408, 4598, 5104, 5776, 6061, 7018, 7942, 8816, 9196, 10469, 12122, 14036, 15884, 18392, 20938, 24244, 28072, 31768, 36784, 41876, 43681, 48488, 56144, 63536, 66671, 83752, 87362, 96976, 115159, 133342, 167504, 174724, 230318, 266684, 349448, 460636, 533368, 698896, 921272, 1066736, 1266749, 1842544, 2533498, 5066996, 10133992, 20267984]

約数ペア:

[(1, 20267984), (2, 10133992), (4, 5066996), (8, 2533498), (11, 1842544), (16, 1266749), (19, 1066736), (22, 921272), (29, 698896), (38, 533368), (44, 460636), (58, 349448), (76, 266684), (88, 230318), (116, 174724), (121, 167504), (152, 133342), (176, 115159), (209, 96976), (232, 87362), (242, 83752), (304, 66671), (319, 63536), (361, 56144), (418, 48488), (464, 43681), (484, 41876), (551, 36784), (638, 31768), (722, 28072), (836, 24244), (968, 20938), (1102, 18392), (1276, 15884), (1444, 14036), (1672, 12122), (1936, 10469), (2204, 9196), (2299, 8816), (2552, 7942), (2888, 7018), (3344, 6061), (3509, 5776), (3971, 5104), (4408, 4598)]