19992544

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:308

約数の個数: 96

約数和(自身を含む): 49152096

約数和(自身を除く): 29159552

約数列:

[1, 2, 4, 8, 11, 13, 16, 17, 22, 26, 32, 34, 44, 52, 68, 88, 104, 136, 143, 176, 187, 208, 221, 257, 272, 286, 352, 374, 416, 442, 514, 544, 572, 748, 884, 1028, 1144, 1496, 1768, 2056, 2288, 2431, 2827, 2992, 3341, 3536, 4112, 4369, 4576, 4862, 5654, 5984, 6682, 7072, 8224, 8738, 9724, 11308, 13364, 17476, 19448, 22616, 26728, 34952, 36751, 38896, 45232, 48059, 53456, 56797, 69904, 73502, 77792, 90464, 96118, 106912, 113594, 139808, 147004, 192236, 227188, 294008, 384472, 454376, 588016, 624767, 768944, 908752, 1176032, 1249534, 1537888, 1817504, 2499068, 4998136, 9996272, 19992544]

約数ペア:

[(1, 19992544), (2, 9996272), (4, 4998136), (8, 2499068), (11, 1817504), (13, 1537888), (16, 1249534), (17, 1176032), (22, 908752), (26, 768944), (32, 624767), (34, 588016), (44, 454376), (52, 384472), (68, 294008), (88, 227188), (104, 192236), (136, 147004), (143, 139808), (176, 113594), (187, 106912), (208, 96118), (221, 90464), (257, 77792), (272, 73502), (286, 69904), (352, 56797), (374, 53456), (416, 48059), (442, 45232), (514, 38896), (544, 36751), (572, 34952), (748, 26728), (884, 22616), (1028, 19448), (1144, 17476), (1496, 13364), (1768, 11308), (2056, 9724), (2288, 8738), (2431, 8224), (2827, 7072), (2992, 6682), (3341, 5984), (3536, 5654), (4112, 4862), (4369, 4576)]