20392120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1087}}^1$

素因数の和:1172

約数の個数: 64

約数和(自身を含む): 53268480

約数和(自身を除く): 32876360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1087, 1340, 1876, 2174, 2345, 2680, 3752, 4348, 4690, 5435, 7609, 8696, 9380, 10870, 15218, 18760, 21740, 30436, 38045, 43480, 60872, 72829, 76090, 145658, 152180, 291316, 304360, 364145, 509803, 582632, 728290, 1019606, 1456580, 2039212, 2549015, 2913160, 4078424, 5098030, 10196060, 20392120]

約数ペア:

[(1, 20392120), (2, 10196060), (4, 5098030), (5, 4078424), (7, 2913160), (8, 2549015), (10, 2039212), (14, 1456580), (20, 1019606), (28, 728290), (35, 582632), (40, 509803), (56, 364145), (67, 304360), (70, 291316), (134, 152180), (140, 145658), (268, 76090), (280, 72829), (335, 60872), (469, 43480), (536, 38045), (670, 30436), (938, 21740), (1087, 18760), (1340, 15218), (1876, 10870), (2174, 9380), (2345, 8696), (2680, 7609), (3752, 5435), (4348, 4690)]