256857120

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13721}}^1$

素因数の和:13755

約数の個数: 144

約数和(自身を含む): 944018712

約数和(自身を除く): 687161592

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1170, 1248, 1440, 1560, 1872, 2080, 2340, 3120, 3744, 4680, 6240, 9360, 13721, 18720, 27442, 41163, 54884, 68605, 82326, 109768, 123489, 137210, 164652, 178373, 205815, 219536, 246978, 274420, 329304, 356746, 411630, 439072, 493956, 535119, 548840, 617445, 658608, 713492, 823260, 891865, 987912, 1070238, 1097680, 1234890, 1317216, 1426984, 1605357, 1646520, 1783730, 1975824, 2140476, 2195360, 2469780, 2675595, 2853968, 3210714, 3293040, 3567460, 3951648, 4280952, 4939560, 5351190, 5707936, 6421428, 6586080, 7134920, 8026785, 8561904, 9879120, 10702380, 12842856, 14269840, 16053570, 17123808, 19758240, 21404760, 25685712, 28539680, 32107140, 42809520, 51371424, 64214280, 85619040, 128428560, 256857120]

約数ペア:

[(1, 256857120), (2, 128428560), (3, 85619040), (4, 64214280), (5, 51371424), (6, 42809520), (8, 32107140), (9, 28539680), (10, 25685712), (12, 21404760), (13, 19758240), (15, 17123808), (16, 16053570), (18, 14269840), (20, 12842856), (24, 10702380), (26, 9879120), (30, 8561904), (32, 8026785), (36, 7134920), (39, 6586080), (40, 6421428), (45, 5707936), (48, 5351190), (52, 4939560), (60, 4280952), (65, 3951648), (72, 3567460), (78, 3293040), (80, 3210714), (90, 2853968), (96, 2675595), (104, 2469780), (117, 2195360), (120, 2140476), (130, 1975824), (144, 1783730), (156, 1646520), (160, 1605357), (180, 1426984), (195, 1317216), (208, 1234890), (234, 1097680), (240, 1070238), (260, 987912), (288, 891865), (312, 823260), (360, 713492), (390, 658608), (416, 617445), (468, 548840), (480, 535119), (520, 493956), (585, 439072), (624, 411630), (720, 356746), (780, 329304), (936, 274420), (1040, 246978), (1170, 219536), (1248, 205815), (1440, 178373), (1560, 164652), (1872, 137210), (2080, 123489), (2340, 109768), (3120, 82326), (3744, 68605), (4680, 54884), (6240, 41163), (9360, 27442), (13721, 18720)]