19859840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 256

約数和(自身を含む): 65802240

約数和(自身を除く): 45942400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 31, 32, 35, 40, 44, 52, 55, 56, 62, 64, 65, 70, 77, 80, 88, 91, 104, 110, 112, 124, 128, 130, 140, 143, 154, 155, 160, 176, 182, 208, 217, 220, 224, 248, 260, 280, 286, 308, 310, 320, 341, 352, 364, 385, 403, 416, 434, 440, 448, 455, 496, 520, 560, 572, 616, 620, 640, 682, 704, 715, 728, 770, 806, 832, 868, 880, 896, 910, 992, 1001, 1040, 1085, 1120, 1144, 1232, 1240, 1364, 1408, 1430, 1456, 1540, 1612, 1664, 1705, 1736, 1760, 1820, 1984, 2002, 2015, 2080, 2170, 2240, 2288, 2387, 2464, 2480, 2728, 2821, 2860, 2912, 3080, 3224, 3410, 3472, 3520, 3640, 3968, 4004, 4030, 4160, 4340, 4433, 4480, 4576, 4774, 4928, 4960, 5005, 5456, 5642, 5720, 5824, 6160, 6448, 6820, 6944, 7040, 7280, 8008, 8060, 8320, 8680, 8866, 9152, 9548, 9856, 9920, 10010, 10912, 11284, 11440, 11648, 11935, 12320, 12896, 13640, 13888, 14105, 14560, 16016, 16120, 17360, 17732, 18304, 19096, 19840, 20020, 21824, 22165, 22568, 22880, 23870, 24640, 25792, 27280, 27776, 28210, 29120, 31031, 32032, 32240, 34720, 35464, 38192, 40040, 43648, 44330, 45136, 45760, 47740, 49280, 51584, 54560, 56420, 58240, 62062, 64064, 64480, 69440, 70928, 76384, 80080, 88660, 90272, 91520, 95480, 109120, 112840, 124124, 128128, 128960, 138880, 141856, 152768, 155155, 160160, 177320, 180544, 190960, 218240, 225680, 248248, 257920, 283712, 305536, 310310, 320320, 354640, 361088, 381920, 451360, 496496, 567424, 620620, 640640, 709280, 763840, 902720, 992992, 1241240, 1418560, 1527680, 1805440, 1985984, 2482480, 2837120, 3971968, 4964960, 9929920, 19859840]

約数ペア:

[(1, 19859840), (2, 9929920), (4, 4964960), (5, 3971968), (7, 2837120), (8, 2482480), (10, 1985984), (11, 1805440), (13, 1527680), (14, 1418560), (16, 1241240), (20, 992992), (22, 902720), (26, 763840), (28, 709280), (31, 640640), (32, 620620), (35, 567424), (40, 496496), (44, 451360), (52, 381920), (55, 361088), (56, 354640), (62, 320320), (64, 310310), (65, 305536), (70, 283712), (77, 257920), (80, 248248), (88, 225680), (91, 218240), (104, 190960), (110, 180544), (112, 177320), (124, 160160), (128, 155155), (130, 152768), (140, 141856), (143, 138880), (154, 128960), (155, 128128), (160, 124124), (176, 112840), (182, 109120), (208, 95480), (217, 91520), (220, 90272), (224, 88660), (248, 80080), (260, 76384), (280, 70928), (286, 69440), (308, 64480), (310, 64064), (320, 62062), (341, 58240), (352, 56420), (364, 54560), (385, 51584), (403, 49280), (416, 47740), (434, 45760), (440, 45136), (448, 44330), (455, 43648), (496, 40040), (520, 38192), (560, 35464), (572, 34720), (616, 32240), (620, 32032), (640, 31031), (682, 29120), (704, 28210), (715, 27776), (728, 27280), (770, 25792), (806, 24640), (832, 23870), (868, 22880), (880, 22568), (896, 22165), (910, 21824), (992, 20020), (1001, 19840), (1040, 19096), (1085, 18304), (1120, 17732), (1144, 17360), (1232, 16120), (1240, 16016), (1364, 14560), (1408, 14105), (1430, 13888), (1456, 13640), (1540, 12896), (1612, 12320), (1664, 11935), (1705, 11648), (1736, 11440), (1760, 11284), (1820, 10912), (1984, 10010), (2002, 9920), (2015, 9856), (2080, 9548), (2170, 9152), (2240, 8866), (2288, 8680), (2387, 8320), (2464, 8060), (2480, 8008), (2728, 7280), (2821, 7040), (2860, 6944), (2912, 6820), (3080, 6448), (3224, 6160), (3410, 5824), (3472, 5720), (3520, 5642), (3640, 5456), (3968, 5005), (4004, 4960), (4030, 4928), (4160, 4774), (4340, 4576), (4433, 4480)]