21005272

素因数分解:

$2^3\times {\mathrm{439}}^1\times {\mathrm{5981}}^1$

素因数の和:6426

約数の個数: 16

約数和(自身を含む): 39481200

約数和(自身を除く): 18475928

約数列:

[1, 2, 4, 8, 439, 878, 1756, 3512, 5981, 11962, 23924, 47848, 2625659, 5251318, 10502636, 21005272]

約数ペア:

[(1, 21005272), (2, 10502636), (4, 5251318), (8, 2625659), (439, 47848), (878, 23924), (1756, 11962), (3512, 5981)]