12891921

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{21169}}^1$

素因数の和:21208

約数の個数: 16

約数和(自身を含む): 20323200

約数和(自身を除く): 7431279

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 21169, 63507, 148183, 444549, 613901, 1841703, 4297307, 12891921]

約数ペア:

[(1, 12891921), (3, 4297307), (7, 1841703), (21, 613901), (29, 444549), (87, 148183), (203, 63507), (609, 21169)]