21461951

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 26265600

約数和(自身を除く): 4803649

約数列:

[1, 7, 31, 49, 71, 199, 217, 497, 1393, 1519, 2201, 3479, 6169, 9751, 14129, 15407, 43183, 98903, 107849, 302281, 437999, 692321, 3065993, 21461951]

約数ペア:

[(1, 21461951), (7, 3065993), (31, 692321), (49, 437999), (71, 302281), (199, 107849), (217, 98903), (497, 43183), (1393, 15407), (1519, 14129), (2201, 9751), (3479, 6169)]