20491460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5479}}^1$

素因数の和:5516

約数の個数: 48

約数和(自身を含む): 49714560

約数和(自身を除く): 29223100

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5479, 10958, 21916, 27395, 54790, 60269, 93143, 109580, 120538, 186286, 241076, 301345, 372572, 465715, 602690, 931430, 1024573, 1205380, 1862860, 2049146, 4098292, 5122865, 10245730, 20491460]

約数ペア:

[(1, 20491460), (2, 10245730), (4, 5122865), (5, 4098292), (10, 2049146), (11, 1862860), (17, 1205380), (20, 1024573), (22, 931430), (34, 602690), (44, 465715), (55, 372572), (68, 301345), (85, 241076), (110, 186286), (170, 120538), (187, 109580), (220, 93143), (340, 60269), (374, 54790), (748, 27395), (935, 21916), (1870, 10958), (3740, 5479)]