256841280

素因数分解:

$2^6\times 3^7\times 5^1\times {\mathrm{367}}^1$

素因数の和:405

約数の個数: 224

約数和(自身を含む): 919764480

約数和(自身を除く): 662923200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 243, 270, 288, 320, 324, 360, 367, 405, 432, 480, 486, 540, 576, 648, 720, 729, 734, 810, 864, 960, 972, 1080, 1101, 1215, 1296, 1440, 1458, 1468, 1620, 1728, 1835, 1944, 2160, 2187, 2202, 2430, 2592, 2880, 2916, 2936, 3240, 3303, 3645, 3670, 3888, 4320, 4374, 4404, 4860, 5184, 5505, 5832, 5872, 6480, 6606, 7290, 7340, 7776, 8640, 8748, 8808, 9720, 9909, 10935, 11010, 11664, 11744, 12960, 13212, 14580, 14680, 15552, 16515, 17496, 17616, 19440, 19818, 21870, 22020, 23328, 23488, 25920, 26424, 29160, 29360, 29727, 33030, 34992, 35232, 38880, 39636, 43740, 44040, 46656, 49545, 52848, 58320, 58720, 59454, 66060, 69984, 70464, 77760, 79272, 87480, 88080, 89181, 99090, 105696, 116640, 117440, 118908, 132120, 139968, 148635, 158544, 174960, 176160, 178362, 198180, 211392, 233280, 237816, 264240, 267543, 297270, 317088, 349920, 352320, 356724, 396360, 445905, 475632, 528480, 535086, 594540, 634176, 699840, 713448, 792720, 802629, 891810, 951264, 1056960, 1070172, 1189080, 1337715, 1426896, 1585440, 1605258, 1783620, 1902528, 2140344, 2378160, 2675430, 2853792, 3170880, 3210516, 3567240, 4013145, 4280688, 4756320, 5350860, 5707584, 6421032, 7134480, 8026290, 8561376, 9512640, 10701720, 12842064, 14268960, 16052580, 17122752, 21403440, 25684128, 28537920, 32105160, 42806880, 51368256, 64210320, 85613760, 128420640, 256841280]

約数ペア:

[(1, 256841280), (2, 128420640), (3, 85613760), (4, 64210320), (5, 51368256), (6, 42806880), (8, 32105160), (9, 28537920), (10, 25684128), (12, 21403440), (15, 17122752), (16, 16052580), (18, 14268960), (20, 12842064), (24, 10701720), (27, 9512640), (30, 8561376), (32, 8026290), (36, 7134480), (40, 6421032), (45, 5707584), (48, 5350860), (54, 4756320), (60, 4280688), (64, 4013145), (72, 3567240), (80, 3210516), (81, 3170880), (90, 2853792), (96, 2675430), (108, 2378160), (120, 2140344), (135, 1902528), (144, 1783620), (160, 1605258), (162, 1585440), (180, 1426896), (192, 1337715), (216, 1189080), (240, 1070172), (243, 1056960), (270, 951264), (288, 891810), (320, 802629), (324, 792720), (360, 713448), (367, 699840), (405, 634176), (432, 594540), (480, 535086), (486, 528480), (540, 475632), (576, 445905), (648, 396360), (720, 356724), (729, 352320), (734, 349920), (810, 317088), (864, 297270), (960, 267543), (972, 264240), (1080, 237816), (1101, 233280), (1215, 211392), (1296, 198180), (1440, 178362), (1458, 176160), (1468, 174960), (1620, 158544), (1728, 148635), (1835, 139968), (1944, 132120), (2160, 118908), (2187, 117440), (2202, 116640), (2430, 105696), (2592, 99090), (2880, 89181), (2916, 88080), (2936, 87480), (3240, 79272), (3303, 77760), (3645, 70464), (3670, 69984), (3888, 66060), (4320, 59454), (4374, 58720), (4404, 58320), (4860, 52848), (5184, 49545), (5505, 46656), (5832, 44040), (5872, 43740), (6480, 39636), (6606, 38880), (7290, 35232), (7340, 34992), (7776, 33030), (8640, 29727), (8748, 29360), (8808, 29160), (9720, 26424), (9909, 25920), (10935, 23488), (11010, 23328), (11664, 22020), (11744, 21870), (12960, 19818), (13212, 19440), (14580, 17616), (14680, 17496), (15552, 16515)]