257312440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4397}}^1$

素因数の和:4445

約数の個数: 128

約数和(自身を含む): 759974400

約数和(自身を除く): 502661960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 19, 20, 22, 28, 35, 38, 40, 44, 55, 56, 70, 76, 77, 88, 95, 110, 133, 140, 152, 154, 190, 209, 220, 266, 280, 308, 380, 385, 418, 440, 532, 616, 665, 760, 770, 836, 1045, 1064, 1330, 1463, 1540, 1672, 2090, 2660, 2926, 3080, 4180, 4397, 5320, 5852, 7315, 8360, 8794, 11704, 14630, 17588, 21985, 29260, 30779, 35176, 43970, 48367, 58520, 61558, 83543, 87940, 96734, 123116, 153895, 167086, 175880, 193468, 241835, 246232, 307790, 334172, 338569, 386936, 417715, 483670, 584801, 615580, 668344, 677138, 835430, 918973, 967340, 1169602, 1231160, 1354276, 1670860, 1692845, 1837946, 1934680, 2339204, 2708552, 2924005, 3341720, 3385690, 3675892, 4594865, 4678408, 5848010, 6432811, 6771380, 7351784, 9189730, 11696020, 12865622, 13542760, 18379460, 23392040, 25731244, 32164055, 36758920, 51462488, 64328110, 128656220, 257312440]

約数ペア:

[(1, 257312440), (2, 128656220), (4, 64328110), (5, 51462488), (7, 36758920), (8, 32164055), (10, 25731244), (11, 23392040), (14, 18379460), (19, 13542760), (20, 12865622), (22, 11696020), (28, 9189730), (35, 7351784), (38, 6771380), (40, 6432811), (44, 5848010), (55, 4678408), (56, 4594865), (70, 3675892), (76, 3385690), (77, 3341720), (88, 2924005), (95, 2708552), (110, 2339204), (133, 1934680), (140, 1837946), (152, 1692845), (154, 1670860), (190, 1354276), (209, 1231160), (220, 1169602), (266, 967340), (280, 918973), (308, 835430), (380, 677138), (385, 668344), (418, 615580), (440, 584801), (532, 483670), (616, 417715), (665, 386936), (760, 338569), (770, 334172), (836, 307790), (1045, 246232), (1064, 241835), (1330, 193468), (1463, 175880), (1540, 167086), (1672, 153895), (2090, 123116), (2660, 96734), (2926, 87940), (3080, 83543), (4180, 61558), (4397, 58520), (5320, 48367), (5852, 43970), (7315, 35176), (8360, 30779), (8794, 29260), (11704, 21985), (14630, 17588)]