81518913

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 145152000

約数和(自身を除く): 63633087

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 107, 139, 189, 203, 261, 321, 417, 609, 749, 783, 963, 973, 1251, 1827, 2247, 2889, 2919, 3103, 3753, 4031, 5481, 6741, 8757, 9309, 12093, 14873, 20223, 21721, 26271, 27927, 28217, 36279, 44619, 65163, 83781, 84651, 104111, 108837, 133857, 195489, 253953, 312333, 401571, 431317, 586467, 761859, 936999, 1293951, 2810997, 3019219, 3881853, 9057657, 11645559, 27172971, 81518913]

約数ペア:

[(1, 81518913), (3, 27172971), (7, 11645559), (9, 9057657), (21, 3881853), (27, 3019219), (29, 2810997), (63, 1293951), (87, 936999), (107, 761859), (139, 586467), (189, 431317), (203, 401571), (261, 312333), (321, 253953), (417, 195489), (609, 133857), (749, 108837), (783, 104111), (963, 84651), (973, 83781), (1251, 65163), (1827, 44619), (2247, 36279), (2889, 28217), (2919, 27927), (3103, 26271), (3753, 21721), (4031, 20223), (5481, 14873), (6741, 12093), (8757, 9309)]