221728388

素因数分解:

$2^2\times 7^1\times {\mathrm{7918871}}^1$

素因数の和:7918882

約数の個数: 12

約数和(自身を含む): 443456832

約数和(自身を除く): 221728444

約数列:

[1, 2, 4, 7, 14, 28, 7918871, 15837742, 31675484, 55432097, 110864194, 221728388]

約数ペア:

[(1, 221728388), (2, 110864194), (4, 55432097), (7, 31675484), (14, 15837742), (28, 7918871)]