209149920

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{20749}}^1$

素因数の和:20777

約数の個数: 144

約数和(自身を含む): 815724000

約数和(自身を除く): 606574080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 20749, 41498, 62247, 82996, 103745, 124494, 145243, 165992, 186741, 207490, 248988, 290486, 311235, 331984, 373482, 414980, 435729, 497976, 580972, 622470, 663968, 726215, 746964, 829960, 871458, 933705, 995952, 1161944, 1244940, 1307187, 1452430, 1493928, 1659920, 1742916, 1867410, 1991904, 2178645, 2323888, 2489880, 2614374, 2904860, 2987856, 3319840, 3485832, 3734820, 4357290, 4647776, 4979760, 5228748, 5809720, 5975712, 6535935, 6971664, 7469640, 8714580, 9959520, 10457496, 11619440, 13071870, 13943328, 14939280, 17429160, 20914992, 23238880, 26143740, 29878560, 34858320, 41829984, 52287480, 69716640, 104574960, 209149920]

約数ペア:

[(1, 209149920), (2, 104574960), (3, 69716640), (4, 52287480), (5, 41829984), (6, 34858320), (7, 29878560), (8, 26143740), (9, 23238880), (10, 20914992), (12, 17429160), (14, 14939280), (15, 13943328), (16, 13071870), (18, 11619440), (20, 10457496), (21, 9959520), (24, 8714580), (28, 7469640), (30, 6971664), (32, 6535935), (35, 5975712), (36, 5809720), (40, 5228748), (42, 4979760), (45, 4647776), (48, 4357290), (56, 3734820), (60, 3485832), (63, 3319840), (70, 2987856), (72, 2904860), (80, 2614374), (84, 2489880), (90, 2323888), (96, 2178645), (105, 1991904), (112, 1867410), (120, 1742916), (126, 1659920), (140, 1493928), (144, 1452430), (160, 1307187), (168, 1244940), (180, 1161944), (210, 995952), (224, 933705), (240, 871458), (252, 829960), (280, 746964), (288, 726215), (315, 663968), (336, 622470), (360, 580972), (420, 497976), (480, 435729), (504, 414980), (560, 373482), (630, 331984), (672, 311235), (720, 290486), (840, 248988), (1008, 207490), (1120, 186741), (1260, 165992), (1440, 145243), (1680, 124494), (2016, 103745), (2520, 82996), (3360, 62247), (5040, 41498), (10080, 20749)]