261967472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:406

約数の個数: 80

約数和(自身を含む): 565297152

約数和(自身を除く): 303329680

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 127, 188, 208, 211, 254, 376, 422, 508, 611, 752, 844, 1016, 1222, 1651, 1688, 2032, 2444, 2743, 3302, 3376, 4888, 5486, 5969, 6604, 9776, 9917, 10972, 11938, 13208, 19834, 21944, 23876, 26416, 26797, 39668, 43888, 47752, 53594, 77597, 79336, 95504, 107188, 128921, 155194, 158672, 214376, 257842, 310388, 348361, 428752, 515684, 620776, 696722, 1031368, 1241552, 1259459, 1393444, 2062736, 2518918, 2786888, 5037836, 5573776, 10075672, 16372967, 20151344, 32745934, 65491868, 130983736, 261967472]

約数ペア:

[(1, 261967472), (2, 130983736), (4, 65491868), (8, 32745934), (13, 20151344), (16, 16372967), (26, 10075672), (47, 5573776), (52, 5037836), (94, 2786888), (104, 2518918), (127, 2062736), (188, 1393444), (208, 1259459), (211, 1241552), (254, 1031368), (376, 696722), (422, 620776), (508, 515684), (611, 428752), (752, 348361), (844, 310388), (1016, 257842), (1222, 214376), (1651, 158672), (1688, 155194), (2032, 128921), (2444, 107188), (2743, 95504), (3302, 79336), (3376, 77597), (4888, 53594), (5486, 47752), (5969, 43888), (6604, 39668), (9776, 26797), (9917, 26416), (10972, 23876), (11938, 21944), (13208, 19834)]