21052715

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{1063}}^1$

素因数の和:1318

約数の個数: 16

約数和(自身を含む): 26889408

約数和(自身を除く): 5836693

約数列:

[1, 5, 17, 85, 233, 1063, 1165, 3961, 5315, 18071, 19805, 90355, 247679, 1238395, 4210543, 21052715]

約数ペア:

[(1, 21052715), (5, 4210543), (17, 1238395), (85, 247679), (233, 90355), (1063, 19805), (1165, 18071), (3961, 5315)]