20347928720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{243863}}^1$

素因数の和:244032

約数の個数: 80

約数和(自身を含む): 54430444800

約数和(自身を除く): 34082516080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 149, 280, 298, 560, 596, 745, 1043, 1192, 1490, 2086, 2384, 2980, 4172, 5215, 5960, 8344, 10430, 11920, 16688, 20860, 41720, 83440, 243863, 487726, 975452, 1219315, 1707041, 1950904, 2438630, 3414082, 3901808, 4877260, 6828164, 8535205, 9754520, 13656328, 17070410, 19509040, 27312656, 34140820, 36335587, 68281640, 72671174, 136563280, 145342348, 181677935, 254349109, 290684696, 363355870, 508698218, 581369392, 726711740, 1017396436, 1271745545, 1453423480, 2034792872, 2543491090, 2906846960, 4069585744, 5086982180, 10173964360, 20347928720]

約数ペア:

[(1, 20347928720), (2, 10173964360), (4, 5086982180), (5, 4069585744), (7, 2906846960), (8, 2543491090), (10, 2034792872), (14, 1453423480), (16, 1271745545), (20, 1017396436), (28, 726711740), (35, 581369392), (40, 508698218), (56, 363355870), (70, 290684696), (80, 254349109), (112, 181677935), (140, 145342348), (149, 136563280), (280, 72671174), (298, 68281640), (560, 36335587), (596, 34140820), (745, 27312656), (1043, 19509040), (1192, 17070410), (1490, 13656328), (2086, 9754520), (2384, 8535205), (2980, 6828164), (4172, 4877260), (5215, 3901808), (5960, 3414082), (8344, 2438630), (10430, 1950904), (11920, 1707041), (16688, 1219315), (20860, 975452), (41720, 487726), (83440, 243863)]