257258820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 288

約数和(自身を含む): 926650368

約数和(自身を除く): 669391548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 53, 60, 65, 70, 78, 84, 91, 98, 105, 106, 127, 130, 140, 147, 156, 159, 182, 195, 196, 210, 212, 245, 254, 260, 265, 273, 294, 318, 364, 371, 381, 390, 420, 455, 490, 508, 530, 546, 588, 635, 636, 637, 689, 735, 742, 762, 780, 795, 889, 910, 980, 1060, 1092, 1113, 1270, 1274, 1365, 1378, 1470, 1484, 1524, 1590, 1651, 1778, 1820, 1855, 1905, 1911, 2067, 2226, 2540, 2548, 2597, 2667, 2730, 2756, 2940, 3180, 3185, 3302, 3445, 3556, 3710, 3810, 3822, 4134, 4445, 4452, 4823, 4953, 5194, 5334, 5460, 5565, 6223, 6370, 6604, 6731, 6890, 7420, 7620, 7644, 7791, 8255, 8268, 8890, 9555, 9646, 9906, 10335, 10388, 10668, 11130, 11557, 12446, 12740, 12985, 13335, 13462, 13780, 14469, 15582, 16510, 17780, 18669, 19110, 19292, 19812, 20193, 20670, 22260, 23114, 24115, 24765, 24892, 25970, 26670, 26924, 28938, 31115, 31164, 33020, 33655, 33761, 34671, 37338, 38220, 38955, 40386, 41340, 46228, 47117, 48230, 49530, 51940, 53340, 57785, 57876, 62230, 67310, 67522, 69342, 72345, 74676, 77910, 80772, 80899, 87503, 93345, 94234, 96460, 99060, 100965, 101283, 115570, 124460, 134620, 135044, 138684, 141351, 144690, 155820, 161798, 168805, 173355, 175006, 186690, 188468, 201930, 202566, 231140, 235585, 242697, 262509, 282702, 289380, 323596, 329819, 337610, 346710, 350012, 373380, 403860, 404495, 405132, 437515, 471170, 485394, 506415, 525018, 565404, 612521, 659638, 675220, 693420, 706755, 808990, 875030, 942340, 970788, 989457, 1012830, 1050036, 1213485, 1225042, 1312545, 1319276, 1413510, 1617980, 1649095, 1750060, 1837563, 1978914, 2025660, 2426970, 2450084, 2625090, 2827020, 3062605, 3298190, 3675126, 3957828, 4287647, 4853940, 4947285, 5250180, 6125210, 6596380, 7350252, 8575294, 9187815, 9894570, 12250420, 12862941, 17150588, 18375630, 19789140, 21438235, 25725882, 36751260, 42876470, 51451764, 64314705, 85752940, 128629410, 257258820]

約数ペア:

[(1, 257258820), (2, 128629410), (3, 85752940), (4, 64314705), (5, 51451764), (6, 42876470), (7, 36751260), (10, 25725882), (12, 21438235), (13, 19789140), (14, 18375630), (15, 17150588), (20, 12862941), (21, 12250420), (26, 9894570), (28, 9187815), (30, 8575294), (35, 7350252), (39, 6596380), (42, 6125210), (49, 5250180), (52, 4947285), (53, 4853940), (60, 4287647), (65, 3957828), (70, 3675126), (78, 3298190), (84, 3062605), (91, 2827020), (98, 2625090), (105, 2450084), (106, 2426970), (127, 2025660), (130, 1978914), (140, 1837563), (147, 1750060), (156, 1649095), (159, 1617980), (182, 1413510), (195, 1319276), (196, 1312545), (210, 1225042), (212, 1213485), (245, 1050036), (254, 1012830), (260, 989457), (265, 970788), (273, 942340), (294, 875030), (318, 808990), (364, 706755), (371, 693420), (381, 675220), (390, 659638), (420, 612521), (455, 565404), (490, 525018), (508, 506415), (530, 485394), (546, 471170), (588, 437515), (635, 405132), (636, 404495), (637, 403860), (689, 373380), (735, 350012), (742, 346710), (762, 337610), (780, 329819), (795, 323596), (889, 289380), (910, 282702), (980, 262509), (1060, 242697), (1092, 235585), (1113, 231140), (1270, 202566), (1274, 201930), (1365, 188468), (1378, 186690), (1470, 175006), (1484, 173355), (1524, 168805), (1590, 161798), (1651, 155820), (1778, 144690), (1820, 141351), (1855, 138684), (1905, 135044), (1911, 134620), (2067, 124460), (2226, 115570), (2540, 101283), (2548, 100965), (2597, 99060), (2667, 96460), (2730, 94234), (2756, 93345), (2940, 87503), (3180, 80899), (3185, 80772), (3302, 77910), (3445, 74676), (3556, 72345), (3710, 69342), (3810, 67522), (3822, 67310), (4134, 62230), (4445, 57876), (4452, 57785), (4823, 53340), (4953, 51940), (5194, 49530), (5334, 48230), (5460, 47117), (5565, 46228), (6223, 41340), (6370, 40386), (6604, 38955), (6731, 38220), (6890, 37338), (7420, 34671), (7620, 33761), (7644, 33655), (7791, 33020), (8255, 31164), (8268, 31115), (8890, 28938), (9555, 26924), (9646, 26670), (9906, 25970), (10335, 24892), (10388, 24765), (10668, 24115), (11130, 23114), (11557, 22260), (12446, 20670), (12740, 20193), (12985, 19812), (13335, 19292), (13462, 19110), (13780, 18669), (14469, 17780), (15582, 16510)]