661880349

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{1031}}^1$

素因数の和:1143

約数の個数: 64

約数和(自身を含む): 1109606400

約数和(自身を除く): 447726051

約数列:

[1, 3, 9, 13, 27, 31, 39, 59, 93, 117, 177, 279, 351, 403, 531, 767, 837, 1031, 1209, 1593, 1829, 2301, 3093, 3627, 5487, 6903, 9279, 10881, 13403, 16461, 20709, 23777, 27837, 31961, 40209, 49383, 60829, 71331, 95883, 120627, 182487, 213993, 287649, 361881, 415493, 547461, 641979, 790777, 862947, 1246479, 1642383, 1885699, 2372331, 3739437, 5657097, 7116993, 11218311, 16971291, 21350979, 24514087, 50913873, 73542261, 220626783, 661880349]

約数ペア:

[(1, 661880349), (3, 220626783), (9, 73542261), (13, 50913873), (27, 24514087), (31, 21350979), (39, 16971291), (59, 11218311), (93, 7116993), (117, 5657097), (177, 3739437), (279, 2372331), (351, 1885699), (403, 1642383), (531, 1246479), (767, 862947), (837, 790777), (1031, 641979), (1209, 547461), (1593, 415493), (1829, 361881), (2301, 287649), (3093, 213993), (3627, 182487), (5487, 120627), (6903, 95883), (9279, 71331), (10881, 60829), (13403, 49383), (16461, 40209), (20709, 31961), (23777, 27837)]