21474305

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1\times {\mathrm{251}}^1$

素因数の和:568

約数の個数: 16

約数和(自身を含む): 26345088

約数和(自身を除く): 4870783

約数列:

[1, 5, 71, 241, 251, 355, 1205, 1255, 17111, 17821, 60491, 85555, 89105, 302455, 4294861, 21474305]

約数ペア:

[(1, 21474305), (5, 4294861), (71, 302455), (241, 89105), (251, 85555), (355, 60491), (1205, 17821), (1255, 17111)]