21270921

素因数分解:

$3^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{3457}}^1$

素因数の和:3760

約数の個数: 16

約数和(自身を含む): 32532864

約数和(自身を除く): 11261943

約数列:

[1, 3, 7, 21, 293, 879, 2051, 3457, 6153, 10371, 24199, 72597, 1012901, 3038703, 7090307, 21270921]

約数ペア:

[(1, 21270921), (3, 7090307), (7, 3038703), (21, 1012901), (293, 72597), (879, 24199), (2051, 10371), (3457, 6153)]