257339680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:379

約数の個数: 144

約数和(自身を含む): 681778944

約数和(自身を除く): 424439264

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 169, 208, 248, 260, 307, 310, 338, 403, 416, 496, 520, 614, 620, 676, 806, 845, 992, 1040, 1228, 1240, 1352, 1535, 1612, 1690, 2015, 2080, 2456, 2480, 2704, 3070, 3224, 3380, 3991, 4030, 4912, 4960, 5239, 5408, 6140, 6448, 6760, 7982, 8060, 9517, 9824, 10478, 12280, 12896, 13520, 15964, 16120, 19034, 19955, 20956, 24560, 26195, 27040, 31928, 32240, 38068, 39910, 41912, 47585, 49120, 51883, 52390, 63856, 64480, 76136, 79820, 83824, 95170, 103766, 104780, 123721, 127712, 152272, 159640, 167648, 190340, 207532, 209560, 247442, 259415, 304544, 319280, 380680, 415064, 419120, 494884, 518830, 618605, 638560, 761360, 830128, 838240, 989768, 1037660, 1237210, 1522720, 1608373, 1660256, 1979536, 2075320, 2474420, 3216746, 3959072, 4150640, 4948840, 6433492, 8041865, 8301280, 9897680, 12866984, 16083730, 19795360, 25733968, 32167460, 51467936, 64334920, 128669840, 257339680]

約数ペア:

[(1, 257339680), (2, 128669840), (4, 64334920), (5, 51467936), (8, 32167460), (10, 25733968), (13, 19795360), (16, 16083730), (20, 12866984), (26, 9897680), (31, 8301280), (32, 8041865), (40, 6433492), (52, 4948840), (62, 4150640), (65, 3959072), (80, 3216746), (104, 2474420), (124, 2075320), (130, 1979536), (155, 1660256), (160, 1608373), (169, 1522720), (208, 1237210), (248, 1037660), (260, 989768), (307, 838240), (310, 830128), (338, 761360), (403, 638560), (416, 618605), (496, 518830), (520, 494884), (614, 419120), (620, 415064), (676, 380680), (806, 319280), (845, 304544), (992, 259415), (1040, 247442), (1228, 209560), (1240, 207532), (1352, 190340), (1535, 167648), (1612, 159640), (1690, 152272), (2015, 127712), (2080, 123721), (2456, 104780), (2480, 103766), (2704, 95170), (3070, 83824), (3224, 79820), (3380, 76136), (3991, 64480), (4030, 63856), (4912, 52390), (4960, 51883), (5239, 49120), (5408, 47585), (6140, 41912), (6448, 39910), (6760, 38068), (7982, 32240), (8060, 31928), (9517, 27040), (9824, 26195), (10478, 24560), (12280, 20956), (12896, 19955), (13520, 19034), (15964, 16120)]