253857760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 144

約数和(自身を含む): 672634368

約数和(自身を除く): 418776608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 127, 130, 155, 160, 208, 248, 254, 260, 310, 403, 416, 496, 508, 520, 620, 635, 806, 961, 992, 1016, 1040, 1240, 1270, 1612, 1651, 1922, 2015, 2032, 2080, 2480, 2540, 3224, 3302, 3844, 3937, 4030, 4064, 4805, 4960, 5080, 6448, 6604, 7688, 7874, 8060, 8255, 9610, 10160, 12493, 12896, 13208, 15376, 15748, 16120, 16510, 19220, 19685, 20320, 24986, 26416, 30752, 31496, 32240, 33020, 38440, 39370, 49972, 51181, 52832, 62465, 62992, 64480, 66040, 76880, 78740, 99944, 102362, 122047, 124930, 125984, 132080, 153760, 157480, 199888, 204724, 244094, 249860, 255905, 264160, 314960, 399776, 409448, 488188, 499720, 511810, 610235, 629920, 818896, 976376, 999440, 1023620, 1220470, 1586611, 1637792, 1952752, 1998880, 2047240, 2440940, 3173222, 3905504, 4094480, 4881880, 6346444, 7933055, 8188960, 9763760, 12692888, 15866110, 19527520, 25385776, 31732220, 50771552, 63464440, 126928880, 253857760]

約数ペア:

[(1, 253857760), (2, 126928880), (4, 63464440), (5, 50771552), (8, 31732220), (10, 25385776), (13, 19527520), (16, 15866110), (20, 12692888), (26, 9763760), (31, 8188960), (32, 7933055), (40, 6346444), (52, 4881880), (62, 4094480), (65, 3905504), (80, 3173222), (104, 2440940), (124, 2047240), (127, 1998880), (130, 1952752), (155, 1637792), (160, 1586611), (208, 1220470), (248, 1023620), (254, 999440), (260, 976376), (310, 818896), (403, 629920), (416, 610235), (496, 511810), (508, 499720), (520, 488188), (620, 409448), (635, 399776), (806, 314960), (961, 264160), (992, 255905), (1016, 249860), (1040, 244094), (1240, 204724), (1270, 199888), (1612, 157480), (1651, 153760), (1922, 132080), (2015, 125984), (2032, 124930), (2080, 122047), (2480, 102362), (2540, 99944), (3224, 78740), (3302, 76880), (3844, 66040), (3937, 64480), (4030, 62992), (4064, 62465), (4805, 52832), (4960, 51181), (5080, 49972), (6448, 39370), (6604, 38440), (7688, 33020), (7874, 32240), (8060, 31496), (8255, 30752), (9610, 26416), (10160, 24986), (12493, 20320), (12896, 19685), (13208, 19220), (15376, 16510), (15748, 16120)]