256407840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13697}}^1$

素因数の和:13731

約数の個数: 144

約数和(自身を含む): 942367608

約数和(自身を除く): 685959768

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, 13697, 18720, 27394, 41091, 54788, 68485, 82182, 109576, 123273, 136970, 164364, 178061, 205455, 219152, 246546, 273940, 328728, 356122, 410910, 438304, 493092, 534183, 547880, 616365, 657456, 712244, 821820, 890305, 986184, 1068366, 1095760, 1232730, 1314912, 1424488, 1602549, 1643640, 1780610, 1972368, 2136732, 2191520, 2465460, 2670915, 2848976, 3205098, 3287280, 3561220, 3944736, 4273464, 4930920, 5341830, 5697952, 6410196, 6574560, 7122440, 8012745, 8546928, 9861840, 10683660, 12820392, 14244880, 16025490, 17093856, 19723680, 21367320, 25640784, 28489760, 32050980, 42734640, 51281568, 64101960, 85469280, 128203920, 256407840]

約数ペア:

[(1, 256407840), (2, 128203920), (3, 85469280), (4, 64101960), (5, 51281568), (6, 42734640), (8, 32050980), (9, 28489760), (10, 25640784), (12, 21367320), (13, 19723680), (15, 17093856), (16, 16025490), (18, 14244880), (20, 12820392), (24, 10683660), (26, 9861840), (30, 8546928), (32, 8012745), (36, 7122440), (39, 6574560), (40, 6410196), (45, 5697952), (48, 5341830), (52, 4930920), (60, 4273464), (65, 3944736), (72, 3561220), (78, 3287280), (80, 3205098), (90, 2848976), (96, 2670915), (104, 2465460), (117, 2191520), (120, 2136732), (130, 1972368), (144, 1780610), (156, 1643640), (160, 1602549), (180, 1424488), (195, 1314912), (208, 1232730), (234, 1095760), (240, 1068366), (260, 986184), (288, 890305), (312, 821820), (360, 712244), (390, 657456), (416, 616365), (468, 547880), (480, 534183), (520, 493092), (585, 438304), (624, 410910), (720, 356122), (780, 328728), (936, 273940), (1040, 246546), (1170, 219152), (1248, 205455), (1440, 178061), (1560, 164364), (1872, 136970), (2080, 123273), (2340, 109576), (3120, 82182), (3744, 68485), (4680, 54788), (6240, 41091), (9360, 27394), (13697, 18720)]