20779740

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:249

約数の個数: 120

約数和(自身を含む): 66350592

約数和(自身を除く): 45570852

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 101, 108, 127, 135, 162, 180, 202, 254, 270, 303, 324, 381, 404, 405, 505, 508, 540, 606, 635, 762, 810, 909, 1010, 1143, 1212, 1270, 1515, 1524, 1620, 1818, 1905, 2020, 2286, 2540, 2727, 3030, 3429, 3636, 3810, 4545, 4572, 5454, 5715, 6060, 6858, 7620, 8181, 9090, 10287, 10908, 11430, 12827, 13635, 13716, 16362, 17145, 18180, 20574, 22860, 25654, 27270, 32724, 34290, 38481, 40905, 41148, 51308, 51435, 54540, 64135, 68580, 76962, 81810, 102870, 115443, 128270, 153924, 163620, 192405, 205740, 230886, 256540, 346329, 384810, 461772, 577215, 692658, 769620, 1038987, 1154430, 1385316, 1731645, 2077974, 2308860, 3463290, 4155948, 5194935, 6926580, 10389870, 20779740]

約数ペア:

[(1, 20779740), (2, 10389870), (3, 6926580), (4, 5194935), (5, 4155948), (6, 3463290), (9, 2308860), (10, 2077974), (12, 1731645), (15, 1385316), (18, 1154430), (20, 1038987), (27, 769620), (30, 692658), (36, 577215), (45, 461772), (54, 384810), (60, 346329), (81, 256540), (90, 230886), (101, 205740), (108, 192405), (127, 163620), (135, 153924), (162, 128270), (180, 115443), (202, 102870), (254, 81810), (270, 76962), (303, 68580), (324, 64135), (381, 54540), (404, 51435), (405, 51308), (505, 41148), (508, 40905), (540, 38481), (606, 34290), (635, 32724), (762, 27270), (810, 25654), (909, 22860), (1010, 20574), (1143, 18180), (1212, 17145), (1270, 16362), (1515, 13716), (1524, 13635), (1620, 12827), (1818, 11430), (1905, 10908), (2020, 10287), (2286, 9090), (2540, 8181), (2727, 7620), (3030, 6858), (3429, 6060), (3636, 5715), (3810, 5454), (4545, 4572)]