256471680

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:223

約数の個数: 192

約数和(自身を含む): 850802400

約数和(自身を除く): 594330720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 139, 155, 160, 186, 192, 240, 248, 278, 310, 320, 372, 384, 417, 465, 480, 496, 556, 620, 640, 695, 744, 834, 930, 960, 961, 992, 1112, 1240, 1390, 1488, 1668, 1860, 1920, 1922, 1984, 2085, 2224, 2480, 2780, 2883, 2976, 3336, 3720, 3844, 3968, 4170, 4309, 4448, 4805, 4960, 5560, 5766, 5952, 6672, 7440, 7688, 8340, 8618, 8896, 9610, 9920, 11120, 11532, 11904, 12927, 13344, 14415, 14880, 15376, 16680, 17236, 17792, 19220, 19840, 21545, 22240, 23064, 25854, 26688, 28830, 29760, 30752, 33360, 34472, 38440, 43090, 44480, 46128, 51708, 53376, 57660, 59520, 61504, 64635, 66720, 68944, 76880, 86180, 88960, 92256, 103416, 115320, 123008, 129270, 133440, 133579, 137888, 153760, 172360, 184512, 206832, 230640, 258540, 266880, 267158, 275776, 307520, 344720, 369024, 400737, 413664, 461280, 517080, 534316, 551552, 615040, 667895, 689440, 801474, 827328, 922560, 1034160, 1068632, 1335790, 1378880, 1602948, 1654656, 1845120, 2003685, 2068320, 2137264, 2671580, 2757760, 3205896, 4007370, 4136640, 4274528, 5343160, 6411792, 8014740, 8273280, 8549056, 10686320, 12823584, 16029480, 17098112, 21372640, 25647168, 32058960, 42745280, 51294336, 64117920, 85490560, 128235840, 256471680]

約数ペア:

[(1, 256471680), (2, 128235840), (3, 85490560), (4, 64117920), (5, 51294336), (6, 42745280), (8, 32058960), (10, 25647168), (12, 21372640), (15, 17098112), (16, 16029480), (20, 12823584), (24, 10686320), (30, 8549056), (31, 8273280), (32, 8014740), (40, 6411792), (48, 5343160), (60, 4274528), (62, 4136640), (64, 4007370), (80, 3205896), (93, 2757760), (96, 2671580), (120, 2137264), (124, 2068320), (128, 2003685), (139, 1845120), (155, 1654656), (160, 1602948), (186, 1378880), (192, 1335790), (240, 1068632), (248, 1034160), (278, 922560), (310, 827328), (320, 801474), (372, 689440), (384, 667895), (417, 615040), (465, 551552), (480, 534316), (496, 517080), (556, 461280), (620, 413664), (640, 400737), (695, 369024), (744, 344720), (834, 307520), (930, 275776), (960, 267158), (961, 266880), (992, 258540), (1112, 230640), (1240, 206832), (1390, 184512), (1488, 172360), (1668, 153760), (1860, 137888), (1920, 133579), (1922, 133440), (1984, 129270), (2085, 123008), (2224, 115320), (2480, 103416), (2780, 92256), (2883, 88960), (2976, 86180), (3336, 76880), (3720, 68944), (3844, 66720), (3968, 64635), (4170, 61504), (4309, 59520), (4448, 57660), (4805, 53376), (4960, 51708), (5560, 46128), (5766, 44480), (5952, 43090), (6672, 38440), (7440, 34472), (7688, 33360), (8340, 30752), (8618, 29760), (8896, 28830), (9610, 26688), (9920, 25854), (11120, 23064), (11532, 22240), (11904, 21545), (12927, 19840), (13344, 19220), (14415, 17792), (14880, 17236), (15376, 16680)]