20128741360

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20789}}^1$

素因数の和:20848

約数の個数: 240

約数和(自身を含む): 61716362400

約数和(自身を除く): 41587621040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 35, 38, 40, 49, 52, 56, 65, 70, 76, 80, 91, 95, 98, 104, 112, 130, 133, 140, 152, 182, 190, 196, 208, 245, 247, 260, 266, 280, 304, 364, 380, 392, 455, 490, 494, 520, 532, 560, 637, 665, 728, 760, 784, 910, 931, 980, 988, 1040, 1064, 1235, 1274, 1330, 1456, 1520, 1729, 1820, 1862, 1960, 1976, 2128, 2470, 2548, 2660, 3185, 3458, 3640, 3724, 3920, 3952, 4655, 4940, 5096, 5320, 6370, 6916, 7280, 7448, 8645, 9310, 9880, 10192, 10640, 12103, 12740, 13832, 14896, 17290, 18620, 19760, 20789, 24206, 25480, 27664, 34580, 37240, 41578, 48412, 50960, 60515, 69160, 74480, 83156, 96824, 103945, 121030, 138320, 145523, 166312, 193648, 207890, 242060, 270257, 291046, 332624, 394991, 415780, 484120, 540514, 582092, 727615, 789982, 831560, 968240, 1018661, 1081028, 1164184, 1351285, 1455230, 1579964, 1663120, 1891799, 1974955, 2037322, 2162056, 2328368, 2702570, 2764937, 2910460, 3159928, 3783598, 3949910, 4074644, 4324112, 5093305, 5134883, 5405140, 5529874, 5820920, 6319856, 7567196, 7899820, 8149288, 9458995, 10186610, 10269766, 10810280, 11059748, 11641840, 13242593, 13824685, 15134392, 15799640, 16298576, 18917990, 19354559, 20373220, 20539532, 21620560, 22119496, 25674415, 26485186, 27649370, 30268784, 31599280, 35944181, 37835980, 38709118, 40746440, 41079064, 44238992, 51348830, 52970372, 55298740, 66212965, 71888362, 75671960, 77418236, 81492880, 82158128, 96772795, 102697660, 105940744, 110597480, 132425930, 143776724, 151343920, 154836472, 179720905, 193545590, 205395320, 211881488, 221194960, 251609267, 264851860, 287553448, 309672944, 359441810, 387091180, 410790640, 503218534, 529703720, 575106896, 718883620, 774182360, 1006437068, 1059407440, 1258046335, 1437767240, 1548364720, 2012874136, 2516092670, 2875534480, 4025748272, 5032185340, 10064370680, 20128741360]

約数ペア:

[(1, 20128741360), (2, 10064370680), (4, 5032185340), (5, 4025748272), (7, 2875534480), (8, 2516092670), (10, 2012874136), (13, 1548364720), (14, 1437767240), (16, 1258046335), (19, 1059407440), (20, 1006437068), (26, 774182360), (28, 718883620), (35, 575106896), (38, 529703720), (40, 503218534), (49, 410790640), (52, 387091180), (56, 359441810), (65, 309672944), (70, 287553448), (76, 264851860), (80, 251609267), (91, 221194960), (95, 211881488), (98, 205395320), (104, 193545590), (112, 179720905), (130, 154836472), (133, 151343920), (140, 143776724), (152, 132425930), (182, 110597480), (190, 105940744), (196, 102697660), (208, 96772795), (245, 82158128), (247, 81492880), (260, 77418236), (266, 75671960), (280, 71888362), (304, 66212965), (364, 55298740), (380, 52970372), (392, 51348830), (455, 44238992), (490, 41079064), (494, 40746440), (520, 38709118), (532, 37835980), (560, 35944181), (637, 31599280), (665, 30268784), (728, 27649370), (760, 26485186), (784, 25674415), (910, 22119496), (931, 21620560), (980, 20539532), (988, 20373220), (1040, 19354559), (1064, 18917990), (1235, 16298576), (1274, 15799640), (1330, 15134392), (1456, 13824685), (1520, 13242593), (1729, 11641840), (1820, 11059748), (1862, 10810280), (1960, 10269766), (1976, 10186610), (2128, 9458995), (2470, 8149288), (2548, 7899820), (2660, 7567196), (3185, 6319856), (3458, 5820920), (3640, 5529874), (3724, 5405140), (3920, 5134883), (3952, 5093305), (4655, 4324112), (4940, 4074644), (5096, 3949910), (5320, 3783598), (6370, 3159928), (6916, 2910460), (7280, 2764937), (7448, 2702570), (8645, 2328368), (9310, 2162056), (9880, 2037322), (10192, 1974955), (10640, 1891799), (12103, 1663120), (12740, 1579964), (13832, 1455230), (14896, 1351285), (17290, 1164184), (18620, 1081028), (19760, 1018661), (20789, 968240), (24206, 831560), (25480, 789982), (27664, 727615), (34580, 582092), (37240, 540514), (41578, 484120), (48412, 415780), (50960, 394991), (60515, 332624), (69160, 291046), (74480, 270257), (83156, 242060), (96824, 207890), (103945, 193648), (121030, 166312), (138320, 145523)]