18751313

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1301}}^1$

素因数の和:1408

約数の個数: 16

約数和(自身を含む): 22498560

約数和(自身を除く): 3747247

約数列:

[1, 7, 29, 71, 203, 497, 1301, 2059, 9107, 14413, 37729, 92371, 264103, 646597, 2678759, 18751313]

約数ペア:

[(1, 18751313), (7, 2678759), (29, 646597), (71, 264103), (203, 92371), (497, 37729), (1301, 14413), (2059, 9107)]