21291258268

素因数分解:

$2^2\times 7^1\times {\mathrm{47713}}^1\times {\mathrm{15937}}^1$

素因数の和:63661

約数の個数: 24

約数和(自身を含む): 42586080992

約数和(自身を除く): 21294822724

約数列:

[1, 2, 4, 7, 14, 28, 15937, 31874, 47713, 63748, 95426, 111559, 190852, 223118, 333991, 446236, 667982, 1335964, 760402081, 1520804162, 3041608324, 5322814567, 10645629134, 21291258268]

約数ペア:

[(1, 21291258268), (2, 10645629134), (4, 5322814567), (7, 3041608324), (14, 1520804162), (28, 760402081), (15937, 1335964), (31874, 667982), (47713, 446236), (63748, 333991), (95426, 223118), (111559, 190852)]