81945360

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:326

約数の個数: 240

約数和(自身を含む): 320336640

約数和(自身を除く): 238391280

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, 71, 72, 80, 84, 90, 105, 112, 120, 126, 140, 142, 144, 168, 180, 210, 213, 229, 240, 252, 280, 284, 315, 336, 355, 360, 420, 426, 458, 497, 504, 560, 568, 630, 639, 687, 710, 720, 840, 852, 916, 994, 1008, 1065, 1136, 1145, 1260, 1278, 1374, 1420, 1491, 1603, 1680, 1704, 1832, 1988, 2061, 2130, 2290, 2485, 2520, 2556, 2748, 2840, 2982, 3195, 3206, 3408, 3435, 3664, 3976, 4122, 4260, 4473, 4580, 4809, 4970, 5040, 5112, 5496, 5680, 5964, 6390, 6412, 6870, 7455, 7952, 8015, 8244, 8520, 8946, 9160, 9618, 9940, 10224, 10305, 10992, 11928, 12780, 12824, 13740, 14427, 14910, 16030, 16259, 16488, 17040, 17892, 18320, 19236, 19880, 20610, 22365, 23856, 24045, 25560, 25648, 27480, 28854, 29820, 32060, 32518, 32976, 35784, 38472, 39760, 41220, 44730, 48090, 48777, 51120, 54960, 57708, 59640, 64120, 65036, 71568, 72135, 76944, 81295, 82440, 89460, 96180, 97554, 113813, 115416, 119280, 128240, 130072, 144270, 146331, 162590, 164880, 178920, 192360, 195108, 227626, 230832, 243885, 260144, 288540, 292662, 325180, 341439, 357840, 384720, 390216, 455252, 487770, 569065, 577080, 585324, 650360, 682878, 731655, 780432, 910504, 975540, 1024317, 1138130, 1154160, 1170648, 1300720, 1365756, 1463310, 1707195, 1821008, 1951080, 2048634, 2276260, 2341296, 2731512, 2926620, 3414390, 3902160, 4097268, 4552520, 5121585, 5463024, 5853240, 6828780, 8194536, 9105040, 10243170, 11706480, 13657560, 16389072, 20486340, 27315120, 40972680, 81945360]

約数ペア:

[(1, 81945360), (2, 40972680), (3, 27315120), (4, 20486340), (5, 16389072), (6, 13657560), (7, 11706480), (8, 10243170), (9, 9105040), (10, 8194536), (12, 6828780), (14, 5853240), (15, 5463024), (16, 5121585), (18, 4552520), (20, 4097268), (21, 3902160), (24, 3414390), (28, 2926620), (30, 2731512), (35, 2341296), (36, 2276260), (40, 2048634), (42, 1951080), (45, 1821008), (48, 1707195), (56, 1463310), (60, 1365756), (63, 1300720), (70, 1170648), (71, 1154160), (72, 1138130), (80, 1024317), (84, 975540), (90, 910504), (105, 780432), (112, 731655), (120, 682878), (126, 650360), (140, 585324), (142, 577080), (144, 569065), (168, 487770), (180, 455252), (210, 390216), (213, 384720), (229, 357840), (240, 341439), (252, 325180), (280, 292662), (284, 288540), (315, 260144), (336, 243885), (355, 230832), (360, 227626), (420, 195108), (426, 192360), (458, 178920), (497, 164880), (504, 162590), (560, 146331), (568, 144270), (630, 130072), (639, 128240), (687, 119280), (710, 115416), (720, 113813), (840, 97554), (852, 96180), (916, 89460), (994, 82440), (1008, 81295), (1065, 76944), (1136, 72135), (1145, 71568), (1260, 65036), (1278, 64120), (1374, 59640), (1420, 57708), (1491, 54960), (1603, 51120), (1680, 48777), (1704, 48090), (1832, 44730), (1988, 41220), (2061, 39760), (2130, 38472), (2290, 35784), (2485, 32976), (2520, 32518), (2556, 32060), (2748, 29820), (2840, 28854), (2982, 27480), (3195, 25648), (3206, 25560), (3408, 24045), (3435, 23856), (3664, 22365), (3976, 20610), (4122, 19880), (4260, 19236), (4473, 18320), (4580, 17892), (4809, 17040), (4970, 16488), (5040, 16259), (5112, 16030), (5496, 14910), (5680, 14427), (5964, 13740), (6390, 12824), (6412, 12780), (6870, 11928), (7455, 10992), (7952, 10305), (8015, 10224), (8244, 9940), (8520, 9618), (8946, 9160)]