20175715

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 29362176

約数和(自身を除く): 9186461

約数列:

[1, 5, 7, 23, 35, 71, 115, 161, 353, 355, 497, 805, 1633, 1765, 2471, 2485, 8119, 8165, 11431, 12355, 25063, 40595, 56833, 57155, 125315, 175441, 284165, 576449, 877205, 2882245, 4035143, 20175715]

約数ペア:

[(1, 20175715), (5, 4035143), (7, 2882245), (23, 877205), (35, 576449), (71, 284165), (115, 175441), (161, 125315), (353, 57155), (355, 56833), (497, 40595), (805, 25063), (1633, 12355), (1765, 11431), (2471, 8165), (2485, 8119)]