19980857534

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{97}}^1\times {\mathrm{223}}^1\times {\mathrm{347}}^1$

素因数の和:702

約数の個数: 64

約数和(自身を含む): 33551788032

約数和(自身を除く): 13570930498

約数列:

[1, 2, 11, 22, 97, 121, 194, 223, 242, 347, 446, 694, 1067, 1331, 2134, 2453, 2662, 3817, 4906, 7634, 11737, 21631, 23474, 26983, 33659, 41987, 43262, 53966, 67318, 77381, 83974, 129107, 154762, 237941, 258214, 296813, 370249, 461857, 475882, 593626, 740498, 851191, 923714, 1702382, 2617351, 4072739, 5234702, 7505957, 8145478, 9363101, 15011914, 18726202, 28790861, 44800129, 57581722, 82565527, 89600258, 102994111, 165131054, 205988222, 908220797, 1816441594, 9990428767, 19980857534]

約数ペア:

[(1, 19980857534), (2, 9990428767), (11, 1816441594), (22, 908220797), (97, 205988222), (121, 165131054), (194, 102994111), (223, 89600258), (242, 82565527), (347, 57581722), (446, 44800129), (694, 28790861), (1067, 18726202), (1331, 15011914), (2134, 9363101), (2453, 8145478), (2662, 7505957), (3817, 5234702), (4906, 4072739), (7634, 2617351), (11737, 1702382), (21631, 923714), (23474, 851191), (26983, 740498), (33659, 593626), (41987, 475882), (43262, 461857), (53966, 370249), (67318, 296813), (77381, 258214), (83974, 237941), (129107, 154762)]