21278222

素因数分解:

$2^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{6637}}^1$

素因数の和:6875

約数の個数: 16

約数和(自身を含む): 36641760

約数和(自身を除く): 15363538

約数列:

[1, 2, 7, 14, 229, 458, 1603, 3206, 6637, 13274, 46459, 92918, 1519873, 3039746, 10639111, 21278222]

約数ペア:

[(1, 21278222), (2, 10639111), (7, 3039746), (14, 1519873), (229, 92918), (458, 46459), (1603, 13274), (3206, 6637)]