257927280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{229}}^1$

素因数の和:296

約数の個数: 240

約数和(自身を含む): 912754080

約数和(自身を除く): 654826800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 19, 20, 24, 26, 30, 38, 39, 40, 48, 52, 57, 60, 65, 76, 78, 80, 95, 104, 114, 120, 130, 152, 156, 190, 195, 208, 228, 229, 240, 247, 260, 285, 304, 312, 361, 380, 390, 456, 458, 494, 520, 570, 624, 687, 722, 741, 760, 780, 912, 916, 988, 1040, 1083, 1140, 1145, 1235, 1374, 1444, 1482, 1520, 1560, 1805, 1832, 1976, 2166, 2280, 2290, 2470, 2748, 2888, 2964, 2977, 3120, 3435, 3610, 3664, 3705, 3952, 4332, 4351, 4560, 4580, 4693, 4940, 5415, 5496, 5776, 5928, 5954, 6870, 7220, 7410, 8664, 8702, 8931, 9160, 9386, 9880, 10830, 10992, 11856, 11908, 13053, 13740, 14079, 14440, 14820, 14885, 17328, 17404, 17862, 18320, 18772, 19760, 21660, 21755, 23465, 23816, 26106, 27480, 28158, 28880, 29640, 29770, 34808, 35724, 37544, 43320, 43510, 44655, 46930, 47632, 52212, 54960, 56316, 56563, 59280, 59540, 65265, 69616, 70395, 71448, 75088, 82669, 86640, 87020, 89310, 93860, 104424, 112632, 113126, 119080, 130530, 140790, 142896, 165338, 169689, 174040, 178620, 187720, 208848, 225264, 226252, 238160, 248007, 261060, 281580, 282815, 330676, 339378, 348080, 357240, 375440, 413345, 452504, 496014, 522120, 563160, 565630, 661352, 678756, 714480, 826690, 848445, 905008, 992028, 1044240, 1074697, 1126320, 1131260, 1240035, 1322704, 1357512, 1653380, 1696890, 1984056, 2149394, 2262520, 2480070, 2715024, 3224091, 3306760, 3393780, 3968112, 4298788, 4525040, 4960140, 5373485, 6448182, 6613520, 6787560, 8597576, 9920280, 10746970, 12896364, 13575120, 16120455, 17195152, 19840560, 21493940, 25792728, 32240910, 42987880, 51585456, 64481820, 85975760, 128963640, 257927280]

約数ペア:

[(1, 257927280), (2, 128963640), (3, 85975760), (4, 64481820), (5, 51585456), (6, 42987880), (8, 32240910), (10, 25792728), (12, 21493940), (13, 19840560), (15, 17195152), (16, 16120455), (19, 13575120), (20, 12896364), (24, 10746970), (26, 9920280), (30, 8597576), (38, 6787560), (39, 6613520), (40, 6448182), (48, 5373485), (52, 4960140), (57, 4525040), (60, 4298788), (65, 3968112), (76, 3393780), (78, 3306760), (80, 3224091), (95, 2715024), (104, 2480070), (114, 2262520), (120, 2149394), (130, 1984056), (152, 1696890), (156, 1653380), (190, 1357512), (195, 1322704), (208, 1240035), (228, 1131260), (229, 1126320), (240, 1074697), (247, 1044240), (260, 992028), (285, 905008), (304, 848445), (312, 826690), (361, 714480), (380, 678756), (390, 661352), (456, 565630), (458, 563160), (494, 522120), (520, 496014), (570, 452504), (624, 413345), (687, 375440), (722, 357240), (741, 348080), (760, 339378), (780, 330676), (912, 282815), (916, 281580), (988, 261060), (1040, 248007), (1083, 238160), (1140, 226252), (1145, 225264), (1235, 208848), (1374, 187720), (1444, 178620), (1482, 174040), (1520, 169689), (1560, 165338), (1805, 142896), (1832, 140790), (1976, 130530), (2166, 119080), (2280, 113126), (2290, 112632), (2470, 104424), (2748, 93860), (2888, 89310), (2964, 87020), (2977, 86640), (3120, 82669), (3435, 75088), (3610, 71448), (3664, 70395), (3705, 69616), (3952, 65265), (4332, 59540), (4351, 59280), (4560, 56563), (4580, 56316), (4693, 54960), (4940, 52212), (5415, 47632), (5496, 46930), (5776, 44655), (5928, 43510), (5954, 43320), (6870, 37544), (7220, 35724), (7410, 34808), (8664, 29770), (8702, 29640), (8931, 28880), (9160, 28158), (9386, 27480), (9880, 26106), (10830, 23816), (10992, 23465), (11856, 21755), (11908, 21660), (13053, 19760), (13740, 18772), (14079, 18320), (14440, 17862), (14820, 17404), (14885, 17328)]