21308485

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{283}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 28770336

約数和(自身を除く): 7461851

約数列:

[1, 5, 11, 37, 55, 185, 283, 407, 1369, 1415, 2035, 3113, 6845, 10471, 15059, 15565, 52355, 75295, 115181, 387427, 575905, 1937135, 4261697, 21308485]

約数ペア:

[(1, 21308485), (5, 4261697), (11, 1937135), (37, 575905), (55, 387427), (185, 115181), (283, 75295), (407, 52355), (1369, 15565), (1415, 15059), (2035, 10471), (3113, 6845)]