21257294

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1\times {\mathrm{389}}^1$

素因数の和:787

約数の個数: 16

約数和(自身を含む): 32432400

約数和(自身を除く): 11175106

約数列:

[1, 2, 89, 178, 307, 389, 614, 778, 27323, 34621, 54646, 69242, 119423, 238846, 10628647, 21257294]

約数ペア:

[(1, 21257294), (2, 10628647), (89, 238846), (178, 119423), (307, 69242), (389, 54646), (614, 34621), (778, 27323)]