21346505

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{383}}^1$

素因数の和:616

約数の個数: 16

約数和(自身を含む): 26210304

約数和(自身を除く): 4863799

約数列:

[1, 5, 71, 157, 355, 383, 785, 1915, 11147, 27193, 55735, 60131, 135965, 300655, 4269301, 21346505]

約数ペア:

[(1, 21346505), (5, 4269301), (71, 300655), (157, 135965), (355, 60131), (383, 55735), (785, 27193), (1915, 11147)]