19988806

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1\times {\mathrm{863}}^1$

素因数の和:1215

約数の個数: 16

約数和(自身を含む): 30927744

約数和(自身を除く): 10938938

約数列:

[1, 2, 37, 74, 313, 626, 863, 1726, 11581, 23162, 31931, 63862, 270119, 540238, 9994403, 19988806]

約数ペア:

[(1, 19988806), (2, 9994403), (37, 540238), (74, 270119), (313, 63862), (626, 31931), (863, 23162), (1726, 11581)]