1319518720

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1279}}^1$

素因数の和:1346

約数の個数: 160

約数和(自身を含む): 3519774720

約数和(自身を除く): 2200256000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 512, 520, 620, 640, 806, 832, 992, 1040, 1240, 1279, 1280, 1612, 1664, 1984, 2015, 2080, 2480, 2558, 2560, 3224, 3328, 3968, 4030, 4160, 4960, 5116, 6395, 6448, 6656, 7936, 8060, 8320, 9920, 10232, 12790, 12896, 15872, 16120, 16627, 16640, 19840, 20464, 25580, 25792, 32240, 33254, 33280, 39649, 39680, 40928, 51160, 51584, 64480, 66508, 79298, 79360, 81856, 83135, 102320, 103168, 128960, 133016, 158596, 163712, 166270, 198245, 204640, 206336, 257920, 266032, 317192, 327424, 332540, 396490, 409280, 515437, 515840, 532064, 634384, 654848, 665080, 792980, 818560, 1030874, 1031680, 1064128, 1268768, 1330160, 1585960, 1637120, 2061748, 2128256, 2537536, 2577185, 2660320, 3171920, 3274240, 4123496, 4256512, 5075072, 5154370, 5320640, 6343840, 8246992, 8513024, 10150144, 10308740, 10641280, 12687680, 16493984, 20300288, 20617480, 21282560, 25375360, 32987968, 41234960, 42565120, 50750720, 65975936, 82469920, 101501440, 131951872, 164939840, 263903744, 329879680, 659759360, 1319518720]

約数ペア:

[(1, 1319518720), (2, 659759360), (4, 329879680), (5, 263903744), (8, 164939840), (10, 131951872), (13, 101501440), (16, 82469920), (20, 65975936), (26, 50750720), (31, 42565120), (32, 41234960), (40, 32987968), (52, 25375360), (62, 21282560), (64, 20617480), (65, 20300288), (80, 16493984), (104, 12687680), (124, 10641280), (128, 10308740), (130, 10150144), (155, 8513024), (160, 8246992), (208, 6343840), (248, 5320640), (256, 5154370), (260, 5075072), (310, 4256512), (320, 4123496), (403, 3274240), (416, 3171920), (496, 2660320), (512, 2577185), (520, 2537536), (620, 2128256), (640, 2061748), (806, 1637120), (832, 1585960), (992, 1330160), (1040, 1268768), (1240, 1064128), (1279, 1031680), (1280, 1030874), (1612, 818560), (1664, 792980), (1984, 665080), (2015, 654848), (2080, 634384), (2480, 532064), (2558, 515840), (2560, 515437), (3224, 409280), (3328, 396490), (3968, 332540), (4030, 327424), (4160, 317192), (4960, 266032), (5116, 257920), (6395, 206336), (6448, 204640), (6656, 198245), (7936, 166270), (8060, 163712), (8320, 158596), (9920, 133016), (10232, 128960), (12790, 103168), (12896, 102320), (15872, 83135), (16120, 81856), (16627, 79360), (16640, 79298), (19840, 66508), (20464, 64480), (25580, 51584), (25792, 51160), (32240, 40928), (33254, 39680), (33280, 39649)]