20989798

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{4861}}^1$

素因数の和:5007

約数の個数: 16

約数和(自身を含む): 33606144

約数和(自身を除く): 12616346

約数列:

[1, 2, 17, 34, 127, 254, 2159, 4318, 4861, 9722, 82637, 165274, 617347, 1234694, 10494899, 20989798]

約数ペア:

[(1, 20989798), (2, 10494899), (17, 1234694), (34, 617347), (127, 165274), (254, 82637), (2159, 9722), (4318, 4861)]