18712456

素因数分解:

$2^3\times 7^1\times {\mathrm{389}}^1\times {\mathrm{859}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 40248000

約数和(自身を除く): 21535544

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 389, 778, 859, 1556, 1718, 2723, 3112, 3436, 5446, 6013, 6872, 10892, 12026, 21784, 24052, 48104, 334151, 668302, 1336604, 2339057, 2673208, 4678114, 9356228, 18712456]

約数ペア:

[(1, 18712456), (2, 9356228), (4, 4678114), (7, 2673208), (8, 2339057), (14, 1336604), (28, 668302), (56, 334151), (389, 48104), (778, 24052), (859, 21784), (1556, 12026), (1718, 10892), (2723, 6872), (3112, 6013), (3436, 5446)]