19978488

素因数分解:

$2^3\times 3^5\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:303

約数の個数: 96

約数和(自身を含む): 57657600

約数和(自身を除く): 37679112

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 43, 54, 72, 81, 86, 108, 129, 162, 172, 216, 239, 243, 258, 324, 344, 387, 478, 486, 516, 648, 717, 774, 956, 972, 1032, 1161, 1434, 1548, 1912, 1944, 2151, 2322, 2868, 3096, 3483, 4302, 4644, 5736, 6453, 6966, 8604, 9288, 10277, 10449, 12906, 13932, 17208, 19359, 20554, 20898, 25812, 27864, 30831, 38718, 41108, 41796, 51624, 58077, 61662, 77436, 82216, 83592, 92493, 116154, 123324, 154872, 184986, 232308, 246648, 277479, 369972, 464616, 554958, 739944, 832437, 1109916, 1664874, 2219832, 2497311, 3329748, 4994622, 6659496, 9989244, 19978488]

約数ペア:

[(1, 19978488), (2, 9989244), (3, 6659496), (4, 4994622), (6, 3329748), (8, 2497311), (9, 2219832), (12, 1664874), (18, 1109916), (24, 832437), (27, 739944), (36, 554958), (43, 464616), (54, 369972), (72, 277479), (81, 246648), (86, 232308), (108, 184986), (129, 154872), (162, 123324), (172, 116154), (216, 92493), (239, 83592), (243, 82216), (258, 77436), (324, 61662), (344, 58077), (387, 51624), (478, 41796), (486, 41108), (516, 38718), (648, 30831), (717, 27864), (774, 25812), (956, 20898), (972, 20554), (1032, 19359), (1161, 17208), (1434, 13932), (1548, 12906), (1912, 10449), (1944, 10277), (2151, 9288), (2322, 8604), (2868, 6966), (3096, 6453), (3483, 5736), (4302, 4644)]