64989981

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{311}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 112140288

約数和(自身を除く): 47150307

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 107, 217, 279, 311, 321, 651, 749, 933, 963, 1953, 2177, 2247, 2799, 3317, 6531, 6741, 9641, 9951, 19593, 23219, 28923, 29853, 33277, 67487, 69657, 86769, 99831, 202461, 208971, 232939, 299493, 607383, 698817, 1031587, 2096451, 3094761, 7221109, 9284283, 21663327, 64989981]

約数ペア:

[(1, 64989981), (3, 21663327), (7, 9284283), (9, 7221109), (21, 3094761), (31, 2096451), (63, 1031587), (93, 698817), (107, 607383), (217, 299493), (279, 232939), (311, 208971), (321, 202461), (651, 99831), (749, 86769), (933, 69657), (963, 67487), (1953, 33277), (2177, 29853), (2247, 28923), (2799, 23219), (3317, 19593), (6531, 9951), (6741, 9641)]