21454992

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 120

約数和(自身を含む): 65966264

約数和(自身を除く): 44511272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 73, 78, 104, 117, 144, 146, 156, 157, 208, 219, 234, 292, 312, 314, 438, 468, 471, 584, 624, 628, 657, 876, 936, 942, 949, 1168, 1256, 1314, 1413, 1752, 1872, 1884, 1898, 2041, 2512, 2628, 2826, 2847, 3504, 3768, 3796, 4082, 5256, 5652, 5694, 6123, 7536, 7592, 8164, 8541, 10512, 11304, 11388, 11461, 12246, 15184, 16328, 17082, 18369, 22608, 22776, 22922, 24492, 32656, 34164, 34383, 36738, 45552, 45844, 48984, 68328, 68766, 73476, 91688, 97968, 103149, 136656, 137532, 146952, 148993, 183376, 206298, 275064, 293904, 297986, 412596, 446979, 550128, 595972, 825192, 893958, 1191944, 1340937, 1650384, 1787916, 2383888, 2681874, 3575832, 5363748, 7151664, 10727496, 21454992]

約数ペア:

[(1, 21454992), (2, 10727496), (3, 7151664), (4, 5363748), (6, 3575832), (8, 2681874), (9, 2383888), (12, 1787916), (13, 1650384), (16, 1340937), (18, 1191944), (24, 893958), (26, 825192), (36, 595972), (39, 550128), (48, 446979), (52, 412596), (72, 297986), (73, 293904), (78, 275064), (104, 206298), (117, 183376), (144, 148993), (146, 146952), (156, 137532), (157, 136656), (208, 103149), (219, 97968), (234, 91688), (292, 73476), (312, 68766), (314, 68328), (438, 48984), (468, 45844), (471, 45552), (584, 36738), (624, 34383), (628, 34164), (657, 32656), (876, 24492), (936, 22922), (942, 22776), (949, 22608), (1168, 18369), (1256, 17082), (1314, 16328), (1413, 15184), (1752, 12246), (1872, 11461), (1884, 11388), (1898, 11304), (2041, 10512), (2512, 8541), (2628, 8164), (2826, 7592), (2847, 7536), (3504, 6123), (3768, 5694), (3796, 5652), (4082, 5256)]