20871716

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{1607}}^1$

素因数の和:1819

約数の個数: 24

約数和(自身を含む): 38900736

約数和(自身を除く): 18029020

約数列:

[1, 2, 4, 17, 34, 68, 191, 382, 764, 1607, 3214, 3247, 6428, 6494, 12988, 27319, 54638, 109276, 306937, 613874, 1227748, 5217929, 10435858, 20871716]

約数ペア:

[(1, 20871716), (2, 10435858), (4, 5217929), (17, 1227748), (34, 613874), (68, 306937), (191, 109276), (382, 54638), (764, 27319), (1607, 12988), (3214, 6494), (3247, 6428)]