256931880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:204

約数の個数: 256

約数和(自身を含む): 872467200

約数和(自身を除く): 615535320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 29, 30, 34, 40, 43, 51, 58, 60, 68, 85, 86, 87, 101, 102, 116, 120, 129, 136, 145, 170, 172, 174, 202, 204, 215, 232, 255, 258, 290, 303, 340, 344, 348, 404, 408, 430, 435, 493, 505, 510, 516, 580, 606, 645, 680, 696, 731, 808, 860, 870, 986, 1010, 1020, 1032, 1160, 1212, 1247, 1290, 1462, 1479, 1515, 1717, 1720, 1740, 1972, 2020, 2040, 2193, 2424, 2465, 2494, 2580, 2924, 2929, 2958, 3030, 3434, 3480, 3655, 3741, 3944, 4040, 4343, 4386, 4930, 4988, 5151, 5160, 5848, 5858, 5916, 6060, 6235, 6868, 7310, 7395, 7482, 8585, 8686, 8772, 8787, 9860, 9976, 10302, 10965, 11716, 11832, 12120, 12470, 13029, 13736, 14620, 14645, 14790, 14964, 17170, 17372, 17544, 17574, 18705, 19720, 20604, 21199, 21715, 21930, 23432, 24940, 25755, 26058, 29240, 29290, 29580, 29928, 34340, 34744, 35148, 37410, 41208, 42398, 43430, 43860, 43935, 49793, 49880, 51510, 52116, 58580, 59160, 63597, 65145, 68680, 70296, 73831, 74820, 84796, 86860, 87720, 87870, 99586, 103020, 104232, 105995, 117160, 125947, 127194, 130290, 147662, 149379, 149640, 169592, 173720, 175740, 199172, 206040, 211990, 221493, 248965, 251894, 254388, 260580, 295324, 298758, 317985, 351480, 369155, 377841, 398344, 423980, 442986, 497930, 503788, 508776, 521160, 590648, 597516, 629735, 635970, 738310, 746895, 755682, 847960, 885972, 995860, 1007576, 1107465, 1195032, 1259470, 1271940, 1476620, 1493790, 1511364, 1771944, 1889205, 1991720, 2141099, 2214930, 2518940, 2543880, 2953240, 2987580, 3022728, 3778410, 4282198, 4429860, 5037880, 5975160, 6423297, 7556820, 8564396, 8859720, 10705495, 12846594, 15113640, 17128792, 21410990, 25693188, 32116485, 42821980, 51386376, 64232970, 85643960, 128465940, 256931880]

約数ペア:

[(1, 256931880), (2, 128465940), (3, 85643960), (4, 64232970), (5, 51386376), (6, 42821980), (8, 32116485), (10, 25693188), (12, 21410990), (15, 17128792), (17, 15113640), (20, 12846594), (24, 10705495), (29, 8859720), (30, 8564396), (34, 7556820), (40, 6423297), (43, 5975160), (51, 5037880), (58, 4429860), (60, 4282198), (68, 3778410), (85, 3022728), (86, 2987580), (87, 2953240), (101, 2543880), (102, 2518940), (116, 2214930), (120, 2141099), (129, 1991720), (136, 1889205), (145, 1771944), (170, 1511364), (172, 1493790), (174, 1476620), (202, 1271940), (204, 1259470), (215, 1195032), (232, 1107465), (255, 1007576), (258, 995860), (290, 885972), (303, 847960), (340, 755682), (344, 746895), (348, 738310), (404, 635970), (408, 629735), (430, 597516), (435, 590648), (493, 521160), (505, 508776), (510, 503788), (516, 497930), (580, 442986), (606, 423980), (645, 398344), (680, 377841), (696, 369155), (731, 351480), (808, 317985), (860, 298758), (870, 295324), (986, 260580), (1010, 254388), (1020, 251894), (1032, 248965), (1160, 221493), (1212, 211990), (1247, 206040), (1290, 199172), (1462, 175740), (1479, 173720), (1515, 169592), (1717, 149640), (1720, 149379), (1740, 147662), (1972, 130290), (2020, 127194), (2040, 125947), (2193, 117160), (2424, 105995), (2465, 104232), (2494, 103020), (2580, 99586), (2924, 87870), (2929, 87720), (2958, 86860), (3030, 84796), (3434, 74820), (3480, 73831), (3655, 70296), (3741, 68680), (3944, 65145), (4040, 63597), (4343, 59160), (4386, 58580), (4930, 52116), (4988, 51510), (5151, 49880), (5160, 49793), (5848, 43935), (5858, 43860), (5916, 43430), (6060, 42398), (6235, 41208), (6868, 37410), (7310, 35148), (7395, 34744), (7482, 34340), (8585, 29928), (8686, 29580), (8772, 29290), (8787, 29240), (9860, 26058), (9976, 25755), (10302, 24940), (10965, 23432), (11716, 21930), (11832, 21715), (12120, 21199), (12470, 20604), (13029, 19720), (13736, 18705), (14620, 17574), (14645, 17544), (14790, 17372), (14964, 17170)]