20445984

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:199

約数の個数: 144

約数和(自身を含む): 64576512

約数和(自身を除く): 44130528

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 43, 48, 52, 72, 78, 86, 96, 104, 117, 127, 129, 144, 156, 172, 208, 234, 254, 258, 288, 312, 344, 381, 387, 416, 468, 508, 516, 559, 624, 688, 762, 774, 936, 1016, 1032, 1118, 1143, 1248, 1376, 1524, 1548, 1651, 1677, 1872, 2032, 2064, 2236, 2286, 3048, 3096, 3302, 3354, 3744, 4064, 4128, 4472, 4572, 4953, 5031, 5461, 6096, 6192, 6604, 6708, 8944, 9144, 9906, 10062, 10922, 12192, 12384, 13208, 13416, 14859, 16383, 17888, 18288, 19812, 20124, 21844, 26416, 26832, 29718, 32766, 36576, 39624, 40248, 43688, 49149, 52832, 53664, 59436, 65532, 70993, 79248, 80496, 87376, 98298, 118872, 131064, 141986, 158496, 160992, 174752, 196596, 212979, 237744, 262128, 283972, 393192, 425958, 475488, 524256, 567944, 638937, 786384, 851916, 1135888, 1277874, 1572768, 1703832, 2271776, 2555748, 3407664, 5111496, 6815328, 10222992, 20445984]

約数ペア:

[(1, 20445984), (2, 10222992), (3, 6815328), (4, 5111496), (6, 3407664), (8, 2555748), (9, 2271776), (12, 1703832), (13, 1572768), (16, 1277874), (18, 1135888), (24, 851916), (26, 786384), (32, 638937), (36, 567944), (39, 524256), (43, 475488), (48, 425958), (52, 393192), (72, 283972), (78, 262128), (86, 237744), (96, 212979), (104, 196596), (117, 174752), (127, 160992), (129, 158496), (144, 141986), (156, 131064), (172, 118872), (208, 98298), (234, 87376), (254, 80496), (258, 79248), (288, 70993), (312, 65532), (344, 59436), (381, 53664), (387, 52832), (416, 49149), (468, 43688), (508, 40248), (516, 39624), (559, 36576), (624, 32766), (688, 29718), (762, 26832), (774, 26416), (936, 21844), (1016, 20124), (1032, 19812), (1118, 18288), (1143, 17888), (1248, 16383), (1376, 14859), (1524, 13416), (1548, 13208), (1651, 12384), (1677, 12192), (1872, 10922), (2032, 10062), (2064, 9906), (2236, 9144), (2286, 8944), (3048, 6708), (3096, 6604), (3302, 6192), (3354, 6096), (3744, 5461), (4064, 5031), (4128, 4953), (4472, 4572)]