21307696

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25127}}^1$

素因数の和:25188

約数の個数: 20

約数和(自身を含む): 42064272

約数和(自身を除く): 20756576

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25127, 50254, 100508, 201016, 402032, 1331731, 2663462, 5326924, 10653848, 21307696]

約数ペア:

[(1, 21307696), (2, 10653848), (4, 5326924), (8, 2663462), (16, 1331731), (53, 402032), (106, 201016), (212, 100508), (424, 50254), (848, 25127)]