21680248

素因数分解:

$2^3\times {\mathrm{677}}^1\times {\mathrm{4003}}^1$

素因数の和:4686

約数の個数: 16

約数和(自身を含む): 40720680

約数和(自身を除く): 19040432

約数列:

[1, 2, 4, 8, 677, 1354, 2708, 4003, 5416, 8006, 16012, 32024, 2710031, 5420062, 10840124, 21680248]

約数ペア:

[(1, 21680248), (2, 10840124), (4, 5420062), (8, 2710031), (677, 32024), (1354, 16012), (2708, 8006), (4003, 5416)]