81638676

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2473}}^1$

素因数の和:2621

約数の個数: 72

約数和(自身を含む): 237741504

約数和(自身を除く): 156102828

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 131, 252, 262, 393, 524, 786, 917, 1179, 1572, 1834, 2358, 2473, 2751, 3668, 4716, 4946, 5502, 7419, 8253, 9892, 11004, 14838, 16506, 17311, 22257, 29676, 33012, 34622, 44514, 51933, 69244, 89028, 103866, 155799, 207732, 311598, 323963, 623196, 647926, 971889, 1295852, 1943778, 2267741, 2915667, 3887556, 4535482, 5831334, 6803223, 9070964, 11662668, 13606446, 20409669, 27212892, 40819338, 81638676]

約数ペア:

[(1, 81638676), (2, 40819338), (3, 27212892), (4, 20409669), (6, 13606446), (7, 11662668), (9, 9070964), (12, 6803223), (14, 5831334), (18, 4535482), (21, 3887556), (28, 2915667), (36, 2267741), (42, 1943778), (63, 1295852), (84, 971889), (126, 647926), (131, 623196), (252, 323963), (262, 311598), (393, 207732), (524, 155799), (786, 103866), (917, 89028), (1179, 69244), (1572, 51933), (1834, 44514), (2358, 34622), (2473, 33012), (2751, 29676), (3668, 22257), (4716, 17311), (4946, 16506), (5502, 14838), (7419, 11004), (8253, 9892)]