21026054

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{659}}^1$

素因数の和:764

約数の個数: 32

約数和(自身を含む): 37635840

約数和(自身を除く): 16609786

約数列:

[1, 2, 7, 14, 43, 53, 86, 106, 301, 371, 602, 659, 742, 1318, 2279, 4558, 4613, 9226, 15953, 28337, 31906, 34927, 56674, 69854, 198359, 244489, 396718, 488978, 1501861, 3003722, 10513027, 21026054]

約数ペア:

[(1, 21026054), (2, 10513027), (7, 3003722), (14, 1501861), (43, 488978), (53, 396718), (86, 244489), (106, 198359), (301, 69854), (371, 56674), (602, 34927), (659, 31906), (742, 28337), (1318, 15953), (2279, 9226), (4558, 4613)]