256747680

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{25471}}^1$

素因数の和:25499

約数の個数: 144

約数和(自身を含む): 1001355264

約数和(自身を除く): 744607584

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 25471, 50942, 76413, 101884, 127355, 152826, 178297, 203768, 229239, 254710, 305652, 356594, 382065, 407536, 458478, 509420, 534891, 611304, 713188, 764130, 815072, 891485, 916956, 1018840, 1069782, 1146195, 1222608, 1426376, 1528260, 1604673, 1782970, 1833912, 2037680, 2139564, 2292390, 2445216, 2674455, 2852752, 3056520, 3209346, 3565940, 3667824, 4075360, 4279128, 4584780, 5348910, 5705504, 6113040, 6418692, 7131880, 7335648, 8023365, 8558256, 9169560, 10697820, 12226080, 12837384, 14263760, 16046730, 17116512, 18339120, 21395640, 25674768, 28527520, 32093460, 36678240, 42791280, 51349536, 64186920, 85582560, 128373840, 256747680]

約数ペア:

[(1, 256747680), (2, 128373840), (3, 85582560), (4, 64186920), (5, 51349536), (6, 42791280), (7, 36678240), (8, 32093460), (9, 28527520), (10, 25674768), (12, 21395640), (14, 18339120), (15, 17116512), (16, 16046730), (18, 14263760), (20, 12837384), (21, 12226080), (24, 10697820), (28, 9169560), (30, 8558256), (32, 8023365), (35, 7335648), (36, 7131880), (40, 6418692), (42, 6113040), (45, 5705504), (48, 5348910), (56, 4584780), (60, 4279128), (63, 4075360), (70, 3667824), (72, 3565940), (80, 3209346), (84, 3056520), (90, 2852752), (96, 2674455), (105, 2445216), (112, 2292390), (120, 2139564), (126, 2037680), (140, 1833912), (144, 1782970), (160, 1604673), (168, 1528260), (180, 1426376), (210, 1222608), (224, 1146195), (240, 1069782), (252, 1018840), (280, 916956), (288, 891485), (315, 815072), (336, 764130), (360, 713188), (420, 611304), (480, 534891), (504, 509420), (560, 458478), (630, 407536), (672, 382065), (720, 356594), (840, 305652), (1008, 254710), (1120, 229239), (1260, 203768), (1440, 178297), (1680, 152826), (2016, 127355), (2520, 101884), (3360, 76413), (5040, 50942), (10080, 25471)]