21071350

素因数分解:

$2^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{3217}}^1$

素因数の和:3360

約数の個数: 24

約数和(自身を含む): 39504168

約数和(自身を除く): 18432818

約数列:

[1, 2, 5, 10, 25, 50, 131, 262, 655, 1310, 3217, 3275, 6434, 6550, 16085, 32170, 80425, 160850, 421427, 842854, 2107135, 4214270, 10535675, 21071350]

約数ペア:

[(1, 21071350), (2, 10535675), (5, 4214270), (10, 2107135), (25, 842854), (50, 421427), (131, 160850), (262, 80425), (655, 32170), (1310, 16085), (3217, 6550), (3275, 6434)]