20804917

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1021}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 24724224

約数和(自身を除く): 3919307

約数列:

[1, 7, 41, 71, 287, 497, 1021, 2911, 7147, 20377, 41861, 72491, 293027, 507437, 2972131, 20804917]

約数ペア:

[(1, 20804917), (7, 2972131), (41, 507437), (71, 293027), (287, 72491), (497, 41861), (1021, 20377), (2911, 7147)]