20864656

素因数分解:

$2^4\times {\mathrm{653}}^1\times {\mathrm{1997}}^1$

素因数の和:2658

約数の個数: 20

約数和(自身を含む): 40507452

約数和(自身を除く): 19642796

約数列:

[1, 2, 4, 8, 16, 653, 1306, 1997, 2612, 3994, 5224, 7988, 10448, 15976, 31952, 1304041, 2608082, 5216164, 10432328, 20864656]

約数ペア:

[(1, 20864656), (2, 10432328), (4, 5216164), (8, 2608082), (16, 1304041), (653, 31952), (1306, 15976), (1997, 10448), (2612, 7988), (3994, 5224)]