21971656

素因数分解:

$2^3\times 7^1\times {\mathrm{392351}}^1$

素因数の和:392364

約数の個数: 16

約数和(自身を含む): 47082240

約数和(自身を除く): 25110584

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 392351, 784702, 1569404, 2746457, 3138808, 5492914, 10985828, 21971656]

約数ペア:

[(1, 21971656), (2, 10985828), (4, 5492914), (7, 3138808), (8, 2746457), (14, 1569404), (28, 784702), (56, 392351)]