21165242

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 16159558

約数列:

[1, 2, 7, 14, 71, 107, 142, 199, 214, 398, 497, 749, 994, 1393, 1498, 2786, 7597, 14129, 15194, 21293, 28258, 42586, 53179, 98903, 106358, 149051, 197806, 298102, 1511803, 3023606, 10582621, 21165242]

約数ペア:

[(1, 21165242), (2, 10582621), (7, 3023606), (14, 1511803), (71, 298102), (107, 197806), (142, 149051), (199, 106358), (214, 98903), (398, 53179), (497, 42586), (749, 28258), (994, 21293), (1393, 15194), (1498, 14129), (2786, 7597)]