81256560

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4397}}^1$

素因数の和:4431

約数の個数: 160

約数和(自身を含む): 314122752

約数和(自身を除く): 232866192

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 48, 55, 56, 60, 66, 70, 77, 80, 84, 88, 105, 110, 112, 120, 132, 140, 154, 165, 168, 176, 210, 220, 231, 240, 264, 280, 308, 330, 336, 385, 420, 440, 462, 528, 560, 616, 660, 770, 840, 880, 924, 1155, 1232, 1320, 1540, 1680, 1848, 2310, 2640, 3080, 3696, 4397, 4620, 6160, 8794, 9240, 13191, 17588, 18480, 21985, 26382, 30779, 35176, 43970, 48367, 52764, 61558, 65955, 70352, 87940, 92337, 96734, 105528, 123116, 131910, 145101, 153895, 175880, 184674, 193468, 211056, 241835, 246232, 263820, 290202, 307790, 338569, 351760, 369348, 386936, 461685, 483670, 492464, 527640, 580404, 615580, 677138, 725505, 738696, 773872, 923370, 967340, 1015707, 1055280, 1160808, 1231160, 1354276, 1451010, 1477392, 1692845, 1846740, 1934680, 2031414, 2321616, 2462320, 2708552, 2902020, 3385690, 3693480, 3869360, 4062828, 5078535, 5417104, 5804040, 6771380, 7386960, 8125656, 10157070, 11608080, 13542760, 16251312, 20314140, 27085520, 40628280, 81256560]

約数ペア:

[(1, 81256560), (2, 40628280), (3, 27085520), (4, 20314140), (5, 16251312), (6, 13542760), (7, 11608080), (8, 10157070), (10, 8125656), (11, 7386960), (12, 6771380), (14, 5804040), (15, 5417104), (16, 5078535), (20, 4062828), (21, 3869360), (22, 3693480), (24, 3385690), (28, 2902020), (30, 2708552), (33, 2462320), (35, 2321616), (40, 2031414), (42, 1934680), (44, 1846740), (48, 1692845), (55, 1477392), (56, 1451010), (60, 1354276), (66, 1231160), (70, 1160808), (77, 1055280), (80, 1015707), (84, 967340), (88, 923370), (105, 773872), (110, 738696), (112, 725505), (120, 677138), (132, 615580), (140, 580404), (154, 527640), (165, 492464), (168, 483670), (176, 461685), (210, 386936), (220, 369348), (231, 351760), (240, 338569), (264, 307790), (280, 290202), (308, 263820), (330, 246232), (336, 241835), (385, 211056), (420, 193468), (440, 184674), (462, 175880), (528, 153895), (560, 145101), (616, 131910), (660, 123116), (770, 105528), (840, 96734), (880, 92337), (924, 87940), (1155, 70352), (1232, 65955), (1320, 61558), (1540, 52764), (1680, 48367), (1848, 43970), (2310, 35176), (2640, 30779), (3080, 26382), (3696, 21985), (4397, 18480), (4620, 17588), (6160, 13191), (8794, 9240)]