28508740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 70560000

約数和(自身を除く): 42051260

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 29, 38, 52, 58, 65, 76, 95, 116, 130, 145, 190, 199, 247, 260, 290, 377, 380, 398, 494, 551, 580, 754, 796, 988, 995, 1102, 1235, 1508, 1885, 1990, 2204, 2470, 2587, 2755, 3770, 3781, 3980, 4940, 5174, 5510, 5771, 7163, 7540, 7562, 10348, 11020, 11542, 12935, 14326, 15124, 18905, 23084, 25870, 28652, 28855, 35815, 37810, 49153, 51740, 57710, 71630, 75023, 75620, 98306, 109649, 115420, 143260, 150046, 196612, 219298, 245765, 300092, 375115, 438596, 491530, 548245, 750230, 983060, 1096490, 1425437, 1500460, 2192980, 2850874, 5701748, 7127185, 14254370, 28508740]

約数ペア:

[(1, 28508740), (2, 14254370), (4, 7127185), (5, 5701748), (10, 2850874), (13, 2192980), (19, 1500460), (20, 1425437), (26, 1096490), (29, 983060), (38, 750230), (52, 548245), (58, 491530), (65, 438596), (76, 375115), (95, 300092), (116, 245765), (130, 219298), (145, 196612), (190, 150046), (199, 143260), (247, 115420), (260, 109649), (290, 98306), (377, 75620), (380, 75023), (398, 71630), (494, 57710), (551, 51740), (580, 49153), (754, 37810), (796, 35815), (988, 28855), (995, 28652), (1102, 25870), (1235, 23084), (1508, 18905), (1885, 15124), (1990, 14326), (2204, 12935), (2470, 11542), (2587, 11020), (2755, 10348), (3770, 7562), (3781, 7540), (3980, 7163), (4940, 5771), (5174, 5510)]