20821616

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11939}}^1$

素因数の和:12056

約数の個数: 20

約数和(自身を含む): 40715400

約数和(自身を除く): 19893784

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11939, 23878, 47756, 95512, 191024, 1301351, 2602702, 5205404, 10410808, 20821616]

約数ペア:

[(1, 20821616), (2, 10410808), (4, 5205404), (8, 2602702), (16, 1301351), (109, 191024), (218, 95512), (436, 47756), (872, 23878), (1744, 11939)]