21141421

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1759}}^1$

素因数の和:1884

約数の個数: 16

約数和(自身を含む): 25850880

約数和(自身を除く): 4709459

約数列:

[1, 7, 17, 101, 119, 707, 1717, 1759, 12019, 12313, 29903, 177659, 209321, 1243613, 3020203, 21141421]

約数ペア:

[(1, 21141421), (7, 3020203), (17, 1243613), (101, 209321), (119, 177659), (707, 29903), (1717, 12313), (1759, 12019)]