12681987

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{821}}^1$

素因数の和:1114

約数の個数: 16

約数和(自身を含む): 17886720

約数和(自身を除く): 5204733

約数列:

[1, 3, 19, 57, 271, 813, 821, 2463, 5149, 15447, 15599, 46797, 222491, 667473, 4227329, 12681987]

約数ペア:

[(1, 12681987), (3, 4227329), (19, 667473), (57, 222491), (271, 46797), (813, 15599), (821, 15447), (2463, 5149)]