20378512

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:189

約数の個数: 120

約数和(自身を含む): 53434080

約数和(自身を除く): 33055568

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 34, 44, 49, 56, 68, 77, 88, 98, 112, 119, 136, 139, 154, 176, 187, 196, 238, 272, 278, 308, 374, 392, 476, 539, 556, 616, 748, 784, 833, 952, 973, 1078, 1112, 1232, 1309, 1496, 1529, 1666, 1904, 1946, 2156, 2224, 2363, 2618, 2992, 3058, 3332, 3892, 4312, 4726, 5236, 6116, 6664, 6811, 7784, 8624, 9163, 9452, 10472, 10703, 12232, 13328, 13622, 15568, 16541, 18326, 18904, 20944, 21406, 24464, 25993, 27244, 33082, 36652, 37808, 42812, 51986, 54488, 66164, 73304, 74921, 85624, 103972, 108976, 115787, 132328, 146608, 149842, 171248, 181951, 207944, 231574, 264656, 299684, 363902, 415888, 463148, 599368, 727804, 926296, 1198736, 1273657, 1455608, 1852592, 2547314, 2911216, 5094628, 10189256, 20378512]

約数ペア:

[(1, 20378512), (2, 10189256), (4, 5094628), (7, 2911216), (8, 2547314), (11, 1852592), (14, 1455608), (16, 1273657), (17, 1198736), (22, 926296), (28, 727804), (34, 599368), (44, 463148), (49, 415888), (56, 363902), (68, 299684), (77, 264656), (88, 231574), (98, 207944), (112, 181951), (119, 171248), (136, 149842), (139, 146608), (154, 132328), (176, 115787), (187, 108976), (196, 103972), (238, 85624), (272, 74921), (278, 73304), (308, 66164), (374, 54488), (392, 51986), (476, 42812), (539, 37808), (556, 36652), (616, 33082), (748, 27244), (784, 25993), (833, 24464), (952, 21406), (973, 20944), (1078, 18904), (1112, 18326), (1232, 16541), (1309, 15568), (1496, 13622), (1529, 13328), (1666, 12232), (1904, 10703), (1946, 10472), (2156, 9452), (2224, 9163), (2363, 8624), (2618, 7784), (2992, 6811), (3058, 6664), (3332, 6116), (3892, 5236), (4312, 4726)]