161819280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{331}}^1$

素因数の和:454

約数の個数: 240

約数和(自身を含む): 629376384

約数和(自身を除く): 467557104

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 97, 105, 112, 120, 126, 140, 144, 168, 180, 194, 210, 240, 252, 280, 291, 315, 331, 336, 360, 388, 420, 485, 504, 560, 582, 630, 662, 679, 720, 776, 840, 873, 970, 993, 1008, 1164, 1260, 1324, 1358, 1455, 1552, 1655, 1680, 1746, 1940, 1986, 2037, 2317, 2328, 2520, 2648, 2716, 2910, 2979, 3310, 3395, 3492, 3880, 3972, 4074, 4365, 4634, 4656, 4965, 5040, 5296, 5432, 5820, 5958, 6111, 6620, 6790, 6951, 6984, 7760, 7944, 8148, 8730, 9268, 9930, 10185, 10864, 11585, 11640, 11916, 12222, 13240, 13580, 13902, 13968, 14895, 15888, 16296, 17460, 18536, 19860, 20370, 20853, 23170, 23280, 23832, 24444, 26480, 27160, 27804, 29790, 30555, 32107, 32592, 34755, 34920, 37072, 39720, 40740, 41706, 46340, 47664, 48888, 54320, 55608, 59580, 61110, 64214, 69510, 69840, 79440, 81480, 83412, 92680, 96321, 97776, 104265, 111216, 119160, 122220, 128428, 139020, 160535, 162960, 166824, 185360, 192642, 208530, 224749, 238320, 244440, 256856, 278040, 288963, 321070, 333648, 385284, 417060, 449498, 481605, 488880, 513712, 556080, 577926, 642140, 674247, 770568, 834120, 898996, 963210, 1123745, 1155852, 1284280, 1348494, 1444815, 1541136, 1668240, 1797992, 1926420, 2022741, 2247490, 2311704, 2568560, 2696988, 2889630, 3371235, 3595984, 3852840, 4045482, 4494980, 4623408, 5393976, 5779260, 6742470, 7705680, 8090964, 8989960, 10113705, 10787952, 11558520, 13484940, 16181928, 17979920, 20227410, 23117040, 26969880, 32363856, 40454820, 53939760, 80909640, 161819280]

約数ペア:

[(1, 161819280), (2, 80909640), (3, 53939760), (4, 40454820), (5, 32363856), (6, 26969880), (7, 23117040), (8, 20227410), (9, 17979920), (10, 16181928), (12, 13484940), (14, 11558520), (15, 10787952), (16, 10113705), (18, 8989960), (20, 8090964), (21, 7705680), (24, 6742470), (28, 5779260), (30, 5393976), (35, 4623408), (36, 4494980), (40, 4045482), (42, 3852840), (45, 3595984), (48, 3371235), (56, 2889630), (60, 2696988), (63, 2568560), (70, 2311704), (72, 2247490), (80, 2022741), (84, 1926420), (90, 1797992), (97, 1668240), (105, 1541136), (112, 1444815), (120, 1348494), (126, 1284280), (140, 1155852), (144, 1123745), (168, 963210), (180, 898996), (194, 834120), (210, 770568), (240, 674247), (252, 642140), (280, 577926), (291, 556080), (315, 513712), (331, 488880), (336, 481605), (360, 449498), (388, 417060), (420, 385284), (485, 333648), (504, 321070), (560, 288963), (582, 278040), (630, 256856), (662, 244440), (679, 238320), (720, 224749), (776, 208530), (840, 192642), (873, 185360), (970, 166824), (993, 162960), (1008, 160535), (1164, 139020), (1260, 128428), (1324, 122220), (1358, 119160), (1455, 111216), (1552, 104265), (1655, 97776), (1680, 96321), (1746, 92680), (1940, 83412), (1986, 81480), (2037, 79440), (2317, 69840), (2328, 69510), (2520, 64214), (2648, 61110), (2716, 59580), (2910, 55608), (2979, 54320), (3310, 48888), (3395, 47664), (3492, 46340), (3880, 41706), (3972, 40740), (4074, 39720), (4365, 37072), (4634, 34920), (4656, 34755), (4965, 32592), (5040, 32107), (5296, 30555), (5432, 29790), (5820, 27804), (5958, 27160), (6111, 26480), (6620, 24444), (6790, 23832), (6951, 23280), (6984, 23170), (7760, 20853), (7944, 20370), (8148, 19860), (8730, 18536), (9268, 17460), (9930, 16296), (10185, 15888), (10864, 14895), (11585, 13968), (11640, 13902), (11916, 13580), (12222, 13240)]