20385768

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{293}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 55319040

約数和(自身を除く): 34933272

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 223, 293, 312, 446, 586, 669, 879, 892, 1172, 1338, 1758, 1784, 2344, 2676, 2899, 3516, 3809, 5352, 5798, 7032, 7618, 8697, 11427, 11596, 15236, 17394, 22854, 23192, 30472, 34788, 45708, 65339, 69576, 91416, 130678, 196017, 261356, 392034, 522712, 784068, 849407, 1568136, 1698814, 2548221, 3397628, 5096442, 6795256, 10192884, 20385768]

約数ペア:

[(1, 20385768), (2, 10192884), (3, 6795256), (4, 5096442), (6, 3397628), (8, 2548221), (12, 1698814), (13, 1568136), (24, 849407), (26, 784068), (39, 522712), (52, 392034), (78, 261356), (104, 196017), (156, 130678), (223, 91416), (293, 69576), (312, 65339), (446, 45708), (586, 34788), (669, 30472), (879, 23192), (892, 22854), (1172, 17394), (1338, 15236), (1758, 11596), (1784, 11427), (2344, 8697), (2676, 7618), (2899, 7032), (3516, 5798), (3809, 5352)]