257029290

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{233}}^1$

素因数の和:373

約数の個数: 192

約数和(自身を含む): 820025856

約数和(自身を除く): 562996566

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 30, 34, 35, 42, 45, 51, 63, 70, 85, 90, 102, 103, 105, 119, 126, 153, 170, 206, 210, 233, 238, 255, 306, 309, 315, 357, 466, 510, 515, 595, 618, 630, 699, 714, 721, 765, 927, 1030, 1071, 1165, 1190, 1398, 1442, 1530, 1545, 1631, 1751, 1785, 1854, 2097, 2142, 2163, 2330, 3090, 3262, 3495, 3502, 3570, 3605, 3961, 4194, 4326, 4635, 4893, 5253, 5355, 6489, 6990, 7210, 7922, 8155, 8755, 9270, 9786, 10485, 10506, 10710, 10815, 11883, 12257, 12978, 14679, 15759, 16310, 17510, 19805, 20970, 21630, 23766, 23999, 24465, 24514, 26265, 27727, 29358, 31518, 32445, 35649, 36771, 39610, 47998, 48930, 52530, 55454, 59415, 61285, 64890, 71298, 71997, 73395, 73542, 78795, 83181, 110313, 118830, 119995, 122570, 138635, 143994, 146790, 157590, 166362, 167993, 178245, 183855, 215991, 220626, 239990, 249543, 277270, 335986, 356490, 359985, 367710, 407983, 415905, 431982, 499086, 503979, 551565, 719970, 815966, 831810, 839965, 1007958, 1079955, 1103130, 1223949, 1247715, 1511937, 1679930, 2039915, 2159910, 2447898, 2495430, 2519895, 2855881, 3023874, 3671847, 4079830, 5039790, 5711762, 6119745, 7343694, 7559685, 8567643, 12239490, 14279405, 15119370, 17135286, 18359235, 25702929, 28558810, 36718470, 42838215, 51405858, 85676430, 128514645, 257029290]

約数ペア:

[(1, 257029290), (2, 128514645), (3, 85676430), (5, 51405858), (6, 42838215), (7, 36718470), (9, 28558810), (10, 25702929), (14, 18359235), (15, 17135286), (17, 15119370), (18, 14279405), (21, 12239490), (30, 8567643), (34, 7559685), (35, 7343694), (42, 6119745), (45, 5711762), (51, 5039790), (63, 4079830), (70, 3671847), (85, 3023874), (90, 2855881), (102, 2519895), (103, 2495430), (105, 2447898), (119, 2159910), (126, 2039915), (153, 1679930), (170, 1511937), (206, 1247715), (210, 1223949), (233, 1103130), (238, 1079955), (255, 1007958), (306, 839965), (309, 831810), (315, 815966), (357, 719970), (466, 551565), (510, 503979), (515, 499086), (595, 431982), (618, 415905), (630, 407983), (699, 367710), (714, 359985), (721, 356490), (765, 335986), (927, 277270), (1030, 249543), (1071, 239990), (1165, 220626), (1190, 215991), (1398, 183855), (1442, 178245), (1530, 167993), (1545, 166362), (1631, 157590), (1751, 146790), (1785, 143994), (1854, 138635), (2097, 122570), (2142, 119995), (2163, 118830), (2330, 110313), (3090, 83181), (3262, 78795), (3495, 73542), (3502, 73395), (3570, 71997), (3605, 71298), (3961, 64890), (4194, 61285), (4326, 59415), (4635, 55454), (4893, 52530), (5253, 48930), (5355, 47998), (6489, 39610), (6990, 36771), (7210, 35649), (7922, 32445), (8155, 31518), (8755, 29358), (9270, 27727), (9786, 26265), (10485, 24514), (10506, 24465), (10710, 23999), (10815, 23766), (11883, 21630), (12257, 20970), (12978, 19805), (14679, 17510), (15759, 16310)]