257480730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{229}}^1$

素因数の和:317

約数の個数: 144

約数和(自身を含む): 748205640

約数和(自身を除く): 490724910

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 31, 39, 45, 62, 65, 78, 90, 93, 117, 130, 155, 186, 195, 229, 234, 279, 310, 390, 403, 458, 465, 558, 585, 687, 806, 930, 961, 1145, 1170, 1209, 1374, 1395, 1922, 2015, 2061, 2290, 2418, 2790, 2883, 2977, 3435, 3627, 4030, 4122, 4805, 5766, 5954, 6045, 6870, 7099, 7254, 8649, 8931, 9610, 10305, 12090, 12493, 14198, 14415, 14885, 17298, 17862, 18135, 20610, 21297, 24986, 26793, 28830, 29770, 35495, 36270, 37479, 42594, 43245, 44655, 53586, 62465, 63891, 70990, 74958, 86490, 89310, 92287, 106485, 112437, 124930, 127782, 133965, 184574, 187395, 212970, 220069, 224874, 267930, 276861, 319455, 374790, 440138, 461435, 553722, 562185, 638910, 660207, 830583, 922870, 1100345, 1124370, 1320414, 1384305, 1661166, 1980621, 2200690, 2768610, 2860897, 3301035, 3961242, 4152915, 5721794, 6602070, 8305830, 8582691, 9903105, 14304485, 17165382, 19806210, 25748073, 28608970, 42913455, 51496146, 85826910, 128740365, 257480730]

約数ペア:

[(1, 257480730), (2, 128740365), (3, 85826910), (5, 51496146), (6, 42913455), (9, 28608970), (10, 25748073), (13, 19806210), (15, 17165382), (18, 14304485), (26, 9903105), (30, 8582691), (31, 8305830), (39, 6602070), (45, 5721794), (62, 4152915), (65, 3961242), (78, 3301035), (90, 2860897), (93, 2768610), (117, 2200690), (130, 1980621), (155, 1661166), (186, 1384305), (195, 1320414), (229, 1124370), (234, 1100345), (279, 922870), (310, 830583), (390, 660207), (403, 638910), (458, 562185), (465, 553722), (558, 461435), (585, 440138), (687, 374790), (806, 319455), (930, 276861), (961, 267930), (1145, 224874), (1170, 220069), (1209, 212970), (1374, 187395), (1395, 184574), (1922, 133965), (2015, 127782), (2061, 124930), (2290, 112437), (2418, 106485), (2790, 92287), (2883, 89310), (2977, 86490), (3435, 74958), (3627, 70990), (4030, 63891), (4122, 62465), (4805, 53586), (5766, 44655), (5954, 43245), (6045, 42594), (6870, 37479), (7099, 36270), (7254, 35495), (8649, 29770), (8931, 28830), (9610, 26793), (10305, 24986), (12090, 21297), (12493, 20610), (14198, 18135), (14415, 17862), (14885, 17298)]