21493028

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{727}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 39748800

約数和(自身を除く): 18255772

約数列:

[1, 2, 4, 19, 38, 76, 389, 727, 778, 1454, 1556, 2908, 7391, 13813, 14782, 27626, 29564, 55252, 282803, 565606, 1131212, 5373257, 10746514, 21493028]

約数ペア:

[(1, 21493028), (2, 10746514), (4, 5373257), (19, 1131212), (38, 565606), (76, 282803), (389, 55252), (727, 29564), (778, 27626), (1454, 14782), (1556, 13813), (2908, 7391)]