256668840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:368

約数の個数: 192

約数和(自身を含む): 873100800

約数和(自身を除く): 616431960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 31, 36, 40, 45, 60, 62, 72, 90, 93, 109, 120, 124, 155, 180, 186, 211, 218, 248, 279, 310, 327, 360, 372, 422, 436, 465, 545, 558, 620, 633, 654, 744, 844, 872, 930, 981, 1055, 1090, 1116, 1240, 1266, 1308, 1395, 1635, 1688, 1860, 1899, 1962, 2110, 2180, 2232, 2532, 2616, 2790, 3165, 3270, 3379, 3720, 3798, 3924, 4220, 4360, 4905, 5064, 5580, 6330, 6540, 6541, 6758, 7596, 7848, 8440, 9495, 9810, 10137, 11160, 12660, 13080, 13082, 13516, 15192, 16895, 18990, 19620, 19623, 20274, 22999, 25320, 26164, 27032, 30411, 32705, 33790, 37980, 39240, 39246, 40548, 45998, 50685, 52328, 58869, 60822, 65410, 67580, 68997, 75960, 78492, 81096, 91996, 98115, 101370, 114995, 117738, 121644, 130820, 135160, 137994, 152055, 156984, 183992, 196230, 202740, 206991, 229990, 235476, 243288, 261640, 275988, 294345, 304110, 344985, 392460, 405480, 413982, 459980, 470952, 551976, 588690, 608220, 689970, 712969, 784920, 827964, 919960, 1034955, 1177380, 1216440, 1379940, 1425938, 1655928, 2069910, 2138907, 2354760, 2759880, 2851876, 3564845, 4139820, 4277814, 5703752, 6416721, 7129690, 8279640, 8555628, 10694535, 12833442, 14259380, 17111256, 21389070, 25666884, 28518760, 32083605, 42778140, 51333768, 64167210, 85556280, 128334420, 256668840]

約数ペア:

[(1, 256668840), (2, 128334420), (3, 85556280), (4, 64167210), (5, 51333768), (6, 42778140), (8, 32083605), (9, 28518760), (10, 25666884), (12, 21389070), (15, 17111256), (18, 14259380), (20, 12833442), (24, 10694535), (30, 8555628), (31, 8279640), (36, 7129690), (40, 6416721), (45, 5703752), (60, 4277814), (62, 4139820), (72, 3564845), (90, 2851876), (93, 2759880), (109, 2354760), (120, 2138907), (124, 2069910), (155, 1655928), (180, 1425938), (186, 1379940), (211, 1216440), (218, 1177380), (248, 1034955), (279, 919960), (310, 827964), (327, 784920), (360, 712969), (372, 689970), (422, 608220), (436, 588690), (465, 551976), (545, 470952), (558, 459980), (620, 413982), (633, 405480), (654, 392460), (744, 344985), (844, 304110), (872, 294345), (930, 275988), (981, 261640), (1055, 243288), (1090, 235476), (1116, 229990), (1240, 206991), (1266, 202740), (1308, 196230), (1395, 183992), (1635, 156984), (1688, 152055), (1860, 137994), (1899, 135160), (1962, 130820), (2110, 121644), (2180, 117738), (2232, 114995), (2532, 101370), (2616, 98115), (2790, 91996), (3165, 81096), (3270, 78492), (3379, 75960), (3720, 68997), (3798, 67580), (3924, 65410), (4220, 60822), (4360, 58869), (4905, 52328), (5064, 50685), (5580, 45998), (6330, 40548), (6540, 39246), (6541, 39240), (6758, 37980), (7596, 33790), (7848, 32705), (8440, 30411), (9495, 27032), (9810, 26164), (10137, 25320), (11160, 22999), (12660, 20274), (13080, 19623), (13082, 19620), (13516, 18990), (15192, 16895)]