21206328

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 64350720

約数和(自身を除く): 43144392

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 33, 37, 39, 44, 52, 66, 74, 78, 88, 104, 111, 132, 143, 148, 156, 167, 222, 264, 286, 296, 312, 334, 407, 429, 444, 481, 501, 572, 668, 814, 858, 888, 962, 1002, 1144, 1221, 1336, 1443, 1628, 1716, 1837, 1924, 2004, 2171, 2442, 2886, 3256, 3432, 3674, 3848, 4008, 4342, 4884, 5291, 5511, 5772, 6179, 6513, 7348, 8684, 9768, 10582, 11022, 11544, 12358, 13026, 14696, 15873, 17368, 18537, 21164, 22044, 23881, 24716, 26052, 31746, 37074, 42328, 44088, 47762, 49432, 52104, 63492, 67969, 71643, 74148, 80327, 95524, 126984, 135938, 143286, 148296, 160654, 191048, 203907, 240981, 271876, 286572, 321308, 407814, 481962, 543752, 573144, 642616, 815628, 883597, 963924, 1631256, 1767194, 1927848, 2650791, 3534388, 5301582, 7068776, 10603164, 21206328]

約数ペア:

[(1, 21206328), (2, 10603164), (3, 7068776), (4, 5301582), (6, 3534388), (8, 2650791), (11, 1927848), (12, 1767194), (13, 1631256), (22, 963924), (24, 883597), (26, 815628), (33, 642616), (37, 573144), (39, 543752), (44, 481962), (52, 407814), (66, 321308), (74, 286572), (78, 271876), (88, 240981), (104, 203907), (111, 191048), (132, 160654), (143, 148296), (148, 143286), (156, 135938), (167, 126984), (222, 95524), (264, 80327), (286, 74148), (296, 71643), (312, 67969), (334, 63492), (407, 52104), (429, 49432), (444, 47762), (481, 44088), (501, 42328), (572, 37074), (668, 31746), (814, 26052), (858, 24716), (888, 23881), (962, 22044), (1002, 21164), (1144, 18537), (1221, 17368), (1336, 15873), (1443, 14696), (1628, 13026), (1716, 12358), (1837, 11544), (1924, 11022), (2004, 10582), (2171, 9768), (2442, 8684), (2886, 7348), (3256, 6513), (3432, 6179), (3674, 5772), (3848, 5511), (4008, 5291), (4342, 4884)]