1278283760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{1279}}^1$

素因数の和:1367

約数の個数: 120

約数和(自身を含む): 3309788160

約数和(自身を除く): 2031504400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 961, 1040, 1240, 1279, 1612, 1922, 2015, 2480, 2558, 3224, 3844, 4030, 4805, 5116, 6395, 6448, 7688, 8060, 9610, 10232, 12493, 12790, 15376, 16120, 16627, 19220, 20464, 24986, 25580, 32240, 33254, 38440, 39649, 49972, 51160, 62465, 66508, 76880, 79298, 83135, 99944, 102320, 124930, 133016, 158596, 166270, 198245, 199888, 249860, 266032, 317192, 332540, 396490, 499720, 515437, 634384, 665080, 792980, 999440, 1030874, 1229119, 1330160, 1585960, 2061748, 2458238, 2577185, 3171920, 4123496, 4916476, 5154370, 6145595, 8246992, 9832952, 10308740, 12291190, 15978547, 19665904, 20617480, 24582380, 31957094, 41234960, 49164760, 63914188, 79892735, 98329520, 127828376, 159785470, 255656752, 319570940, 639141880, 1278283760]

約数ペア:

[(1, 1278283760), (2, 639141880), (4, 319570940), (5, 255656752), (8, 159785470), (10, 127828376), (13, 98329520), (16, 79892735), (20, 63914188), (26, 49164760), (31, 41234960), (40, 31957094), (52, 24582380), (62, 20617480), (65, 19665904), (80, 15978547), (104, 12291190), (124, 10308740), (130, 9832952), (155, 8246992), (208, 6145595), (248, 5154370), (260, 4916476), (310, 4123496), (403, 3171920), (496, 2577185), (520, 2458238), (620, 2061748), (806, 1585960), (961, 1330160), (1040, 1229119), (1240, 1030874), (1279, 999440), (1612, 792980), (1922, 665080), (2015, 634384), (2480, 515437), (2558, 499720), (3224, 396490), (3844, 332540), (4030, 317192), (4805, 266032), (5116, 249860), (6395, 199888), (6448, 198245), (7688, 166270), (8060, 158596), (9610, 133016), (10232, 124930), (12493, 102320), (12790, 99944), (15376, 83135), (16120, 79298), (16627, 76880), (19220, 66508), (20464, 62465), (24986, 51160), (25580, 49972), (32240, 39649), (33254, 38440)]