256256280

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:303

約数の個数: 288

約数和(自身を含む): 987012000

約数和(自身を除く): 730755720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 73, 84, 90, 98, 105, 120, 126, 140, 146, 147, 168, 180, 196, 199, 210, 219, 245, 252, 280, 292, 294, 315, 360, 365, 392, 398, 420, 438, 441, 490, 504, 511, 584, 588, 597, 630, 657, 730, 735, 796, 840, 876, 882, 980, 995, 1022, 1095, 1176, 1194, 1260, 1314, 1393, 1460, 1470, 1533, 1592, 1752, 1764, 1791, 1960, 1990, 2044, 2190, 2205, 2388, 2520, 2555, 2628, 2786, 2920, 2940, 2985, 3066, 3285, 3528, 3577, 3582, 3980, 4088, 4179, 4380, 4410, 4599, 4776, 5110, 5256, 5572, 5880, 5970, 6132, 6570, 6965, 7154, 7164, 7665, 7960, 8358, 8760, 8820, 8955, 9198, 9751, 10220, 10731, 11144, 11940, 12264, 12537, 13140, 13930, 14308, 14328, 14527, 15330, 16716, 17640, 17885, 17910, 18396, 19502, 20440, 20895, 21462, 22995, 23880, 25074, 26280, 27860, 28616, 29054, 29253, 30660, 32193, 33432, 35770, 35820, 36792, 39004, 41790, 42924, 43581, 45990, 48755, 50148, 53655, 55720, 58108, 58506, 61320, 62685, 64386, 71540, 71640, 72635, 78008, 83580, 85848, 87162, 87759, 91980, 97510, 100296, 101689, 107310, 116216, 117012, 125370, 128772, 130743, 143080, 145270, 146265, 160965, 167160, 174324, 175518, 183960, 195020, 203378, 214620, 217905, 234024, 250740, 257544, 261486, 290540, 292530, 305067, 321930, 348648, 351036, 390040, 406756, 429240, 435810, 438795, 501480, 508445, 522972, 581080, 585060, 610134, 643860, 653715, 702072, 711823, 813512, 871620, 877590, 915201, 1016890, 1045944, 1170120, 1220268, 1287720, 1307430, 1423646, 1525335, 1743240, 1755180, 1830402, 2033780, 2135469, 2440536, 2614860, 2847292, 3050670, 3510360, 3559115, 3660804, 4067560, 4270938, 4576005, 5229720, 5694584, 6101340, 6406407, 7118230, 7321608, 8541876, 9152010, 10677345, 12202680, 12812814, 14236460, 17083752, 18304020, 21354690, 25625628, 28472920, 32032035, 36608040, 42709380, 51251256, 64064070, 85418760, 128128140, 256256280]

約数ペア:

[(1, 256256280), (2, 128128140), (3, 85418760), (4, 64064070), (5, 51251256), (6, 42709380), (7, 36608040), (8, 32032035), (9, 28472920), (10, 25625628), (12, 21354690), (14, 18304020), (15, 17083752), (18, 14236460), (20, 12812814), (21, 12202680), (24, 10677345), (28, 9152010), (30, 8541876), (35, 7321608), (36, 7118230), (40, 6406407), (42, 6101340), (45, 5694584), (49, 5229720), (56, 4576005), (60, 4270938), (63, 4067560), (70, 3660804), (72, 3559115), (73, 3510360), (84, 3050670), (90, 2847292), (98, 2614860), (105, 2440536), (120, 2135469), (126, 2033780), (140, 1830402), (146, 1755180), (147, 1743240), (168, 1525335), (180, 1423646), (196, 1307430), (199, 1287720), (210, 1220268), (219, 1170120), (245, 1045944), (252, 1016890), (280, 915201), (292, 877590), (294, 871620), (315, 813512), (360, 711823), (365, 702072), (392, 653715), (398, 643860), (420, 610134), (438, 585060), (441, 581080), (490, 522972), (504, 508445), (511, 501480), (584, 438795), (588, 435810), (597, 429240), (630, 406756), (657, 390040), (730, 351036), (735, 348648), (796, 321930), (840, 305067), (876, 292530), (882, 290540), (980, 261486), (995, 257544), (1022, 250740), (1095, 234024), (1176, 217905), (1194, 214620), (1260, 203378), (1314, 195020), (1393, 183960), (1460, 175518), (1470, 174324), (1533, 167160), (1592, 160965), (1752, 146265), (1764, 145270), (1791, 143080), (1960, 130743), (1990, 128772), (2044, 125370), (2190, 117012), (2205, 116216), (2388, 107310), (2520, 101689), (2555, 100296), (2628, 97510), (2786, 91980), (2920, 87759), (2940, 87162), (2985, 85848), (3066, 83580), (3285, 78008), (3528, 72635), (3577, 71640), (3582, 71540), (3980, 64386), (4088, 62685), (4179, 61320), (4380, 58506), (4410, 58108), (4599, 55720), (4776, 53655), (5110, 50148), (5256, 48755), (5572, 45990), (5880, 43581), (5970, 42924), (6132, 41790), (6570, 39004), (6965, 36792), (7154, 35820), (7164, 35770), (7665, 33432), (7960, 32193), (8358, 30660), (8760, 29253), (8820, 29054), (8955, 28616), (9198, 27860), (9751, 26280), (10220, 25074), (10731, 23880), (11144, 22995), (11940, 21462), (12264, 20895), (12537, 20440), (13140, 19502), (13930, 18396), (14308, 17910), (14328, 17885), (14527, 17640), (15330, 16716)]