1215691820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:304

約数の個数: 192

約数和(自身を含む): 3210762240

約数和(自身を除く): 1995070420

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 41, 70, 71, 76, 82, 95, 133, 140, 142, 157, 164, 190, 205, 266, 284, 287, 314, 355, 380, 410, 497, 532, 574, 628, 665, 710, 779, 785, 820, 994, 1099, 1148, 1330, 1349, 1420, 1435, 1558, 1570, 1988, 2198, 2485, 2660, 2698, 2870, 2911, 2983, 3116, 3140, 3895, 4396, 4970, 5396, 5453, 5495, 5740, 5822, 5966, 6437, 6745, 7790, 9443, 9940, 10906, 10990, 11147, 11644, 11932, 12874, 13490, 14555, 14915, 15580, 18886, 20377, 20881, 21812, 21980, 22294, 25748, 26980, 27265, 29110, 29830, 32185, 37772, 40754, 41762, 44588, 45059, 47215, 54530, 55309, 55735, 58220, 59660, 64370, 78029, 81508, 83524, 90118, 94430, 101885, 104405, 109060, 110618, 111470, 122303, 128740, 156058, 180236, 188860, 203770, 208810, 211793, 221236, 222940, 225295, 244606, 276545, 312116, 387163, 390145, 407540, 417620, 423586, 450590, 457027, 489212, 553090, 611515, 774326, 780290, 847172, 856121, 901180, 914054, 1058965, 1106180, 1223030, 1482551, 1548652, 1560580, 1712242, 1828108, 1935815, 2117930, 2285135, 2446060, 2965102, 3199189, 3424484, 3871630, 4235860, 4280605, 4570270, 5930204, 6398378, 7412755, 7743260, 8561210, 8683513, 9140540, 12796756, 14825510, 15995945, 17122420, 17367026, 29651020, 31991890, 34734052, 43417565, 60784591, 63983780, 86835130, 121569182, 173670260, 243138364, 303922955, 607845910, 1215691820]

約数ペア:

[(1, 1215691820), (2, 607845910), (4, 303922955), (5, 243138364), (7, 173670260), (10, 121569182), (14, 86835130), (19, 63983780), (20, 60784591), (28, 43417565), (35, 34734052), (38, 31991890), (41, 29651020), (70, 17367026), (71, 17122420), (76, 15995945), (82, 14825510), (95, 12796756), (133, 9140540), (140, 8683513), (142, 8561210), (157, 7743260), (164, 7412755), (190, 6398378), (205, 5930204), (266, 4570270), (284, 4280605), (287, 4235860), (314, 3871630), (355, 3424484), (380, 3199189), (410, 2965102), (497, 2446060), (532, 2285135), (574, 2117930), (628, 1935815), (665, 1828108), (710, 1712242), (779, 1560580), (785, 1548652), (820, 1482551), (994, 1223030), (1099, 1106180), (1148, 1058965), (1330, 914054), (1349, 901180), (1420, 856121), (1435, 847172), (1558, 780290), (1570, 774326), (1988, 611515), (2198, 553090), (2485, 489212), (2660, 457027), (2698, 450590), (2870, 423586), (2911, 417620), (2983, 407540), (3116, 390145), (3140, 387163), (3895, 312116), (4396, 276545), (4970, 244606), (5396, 225295), (5453, 222940), (5495, 221236), (5740, 211793), (5822, 208810), (5966, 203770), (6437, 188860), (6745, 180236), (7790, 156058), (9443, 128740), (9940, 122303), (10906, 111470), (10990, 110618), (11147, 109060), (11644, 104405), (11932, 101885), (12874, 94430), (13490, 90118), (14555, 83524), (14915, 81508), (15580, 78029), (18886, 64370), (20377, 59660), (20881, 58220), (21812, 55735), (21980, 55309), (22294, 54530), (25748, 47215), (26980, 45059), (27265, 44588), (29110, 41762), (29830, 40754), (32185, 37772)]