257209680

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11777}}^1$

素因数の和:11813

約数の個数: 160

約数和(自身を含む): 981437184

約数和(自身を除く): 724227504

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 2184, 2730, 3120, 3640, 4368, 5460, 7280, 10920, 11777, 21840, 23554, 35331, 47108, 58885, 70662, 82439, 94216, 117770, 141324, 153101, 164878, 176655, 188432, 235540, 247317, 282648, 306202, 329756, 353310, 412195, 459303, 471080, 494634, 565296, 612404, 659512, 706620, 765505, 824390, 918606, 942160, 989268, 1071707, 1224808, 1236585, 1319024, 1413240, 1531010, 1648780, 1837212, 1978536, 2143414, 2296515, 2449616, 2473170, 2826480, 3062020, 3215121, 3297560, 3674424, 3957072, 4286828, 4593030, 4946340, 5358535, 6124040, 6430242, 6595120, 7348848, 8573656, 9186060, 9892680, 10717070, 12248080, 12860484, 16075605, 17147312, 18372120, 19785360, 21434140, 25720968, 32151210, 36744240, 42868280, 51441936, 64302420, 85736560, 128604840, 257209680]

約数ペア:

[(1, 257209680), (2, 128604840), (3, 85736560), (4, 64302420), (5, 51441936), (6, 42868280), (7, 36744240), (8, 32151210), (10, 25720968), (12, 21434140), (13, 19785360), (14, 18372120), (15, 17147312), (16, 16075605), (20, 12860484), (21, 12248080), (24, 10717070), (26, 9892680), (28, 9186060), (30, 8573656), (35, 7348848), (39, 6595120), (40, 6430242), (42, 6124040), (48, 5358535), (52, 4946340), (56, 4593030), (60, 4286828), (65, 3957072), (70, 3674424), (78, 3297560), (80, 3215121), (84, 3062020), (91, 2826480), (104, 2473170), (105, 2449616), (112, 2296515), (120, 2143414), (130, 1978536), (140, 1837212), (156, 1648780), (168, 1531010), (182, 1413240), (195, 1319024), (208, 1236585), (210, 1224808), (240, 1071707), (260, 989268), (273, 942160), (280, 918606), (312, 824390), (336, 765505), (364, 706620), (390, 659512), (420, 612404), (455, 565296), (520, 494634), (546, 471080), (560, 459303), (624, 412195), (728, 353310), (780, 329756), (840, 306202), (910, 282648), (1040, 247317), (1092, 235540), (1365, 188432), (1456, 176655), (1560, 164878), (1680, 153101), (1820, 141324), (2184, 117770), (2730, 94216), (3120, 82439), (3640, 70662), (4368, 58885), (5460, 47108), (7280, 35331), (10920, 23554), (11777, 21840)]