21380548

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40189}}^1$

素因数の和:40219

約数の個数: 24

約数和(自身を含む): 45012800

約数和(自身を除く): 23632252

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 40189, 80378, 160756, 281323, 562646, 763591, 1125292, 1527182, 3054364, 5345137, 10690274, 21380548]

約数ペア:

[(1, 21380548), (2, 10690274), (4, 5345137), (7, 3054364), (14, 1527182), (19, 1125292), (28, 763591), (38, 562646), (76, 281323), (133, 160756), (266, 80378), (532, 40189)]