20867184

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 120

約数和(自身を含む): 64183392

約数和(自身を除く): 43316208

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 71, 72, 78, 104, 117, 142, 144, 156, 157, 208, 213, 234, 284, 312, 314, 426, 468, 471, 568, 624, 628, 639, 852, 923, 936, 942, 1136, 1256, 1278, 1413, 1704, 1846, 1872, 1884, 2041, 2512, 2556, 2769, 2826, 3408, 3692, 3768, 4082, 5112, 5538, 5652, 6123, 7384, 7536, 8164, 8307, 10224, 11076, 11147, 11304, 12246, 14768, 16328, 16614, 18369, 22152, 22294, 22608, 24492, 32656, 33228, 33441, 36738, 44304, 44588, 48984, 66456, 66882, 73476, 89176, 97968, 100323, 132912, 133764, 144911, 146952, 178352, 200646, 267528, 289822, 293904, 401292, 434733, 535056, 579644, 802584, 869466, 1159288, 1304199, 1605168, 1738932, 2318576, 2608398, 3477864, 5216796, 6955728, 10433592, 20867184]

約数ペア:

[(1, 20867184), (2, 10433592), (3, 6955728), (4, 5216796), (6, 3477864), (8, 2608398), (9, 2318576), (12, 1738932), (13, 1605168), (16, 1304199), (18, 1159288), (24, 869466), (26, 802584), (36, 579644), (39, 535056), (48, 434733), (52, 401292), (71, 293904), (72, 289822), (78, 267528), (104, 200646), (117, 178352), (142, 146952), (144, 144911), (156, 133764), (157, 132912), (208, 100323), (213, 97968), (234, 89176), (284, 73476), (312, 66882), (314, 66456), (426, 48984), (468, 44588), (471, 44304), (568, 36738), (624, 33441), (628, 33228), (639, 32656), (852, 24492), (923, 22608), (936, 22294), (942, 22152), (1136, 18369), (1256, 16614), (1278, 16328), (1413, 14768), (1704, 12246), (1846, 11304), (1872, 11147), (1884, 11076), (2041, 10224), (2512, 8307), (2556, 8164), (2769, 7536), (2826, 7384), (3408, 6123), (3692, 5652), (3768, 5538), (4082, 5112)]