21147857584

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1327}}^1\times {\mathrm{7489}}^1$

素因数の和:8850

約数の個数: 80

約数和(自身を含む): 49335731200

約数和(自身を除く): 28187873616

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 1327, 2128, 2654, 5308, 7489, 9289, 10616, 14978, 18578, 21232, 25213, 29956, 37156, 50426, 52423, 59912, 74312, 100852, 104846, 119824, 142291, 148624, 176491, 201704, 209692, 284582, 352982, 403408, 419384, 569164, 705964, 838768, 996037, 1138328, 1411928, 1992074, 2276656, 2823856, 3984148, 7968296, 9937903, 15936592, 19875806, 39751612, 69565321, 79503224, 139130642, 159006448, 188820157, 278261284, 377640314, 556522568, 755280628, 1113045136, 1321741099, 1510561256, 2643482198, 3021122512, 5286964396, 10573928792, 21147857584]

約数ペア:

[(1, 21147857584), (2, 10573928792), (4, 5286964396), (7, 3021122512), (8, 2643482198), (14, 1510561256), (16, 1321741099), (19, 1113045136), (28, 755280628), (38, 556522568), (56, 377640314), (76, 278261284), (112, 188820157), (133, 159006448), (152, 139130642), (266, 79503224), (304, 69565321), (532, 39751612), (1064, 19875806), (1327, 15936592), (2128, 9937903), (2654, 7968296), (5308, 3984148), (7489, 2823856), (9289, 2276656), (10616, 1992074), (14978, 1411928), (18578, 1138328), (21232, 996037), (25213, 838768), (29956, 705964), (37156, 569164), (50426, 419384), (52423, 403408), (59912, 352982), (74312, 284582), (100852, 209692), (104846, 201704), (119824, 176491), (142291, 148624)]