21257931

素因数分解:

$3^1\times {\mathrm{151}}^1\times {\mathrm{167}}^1\times {\mathrm{281}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 28804608

約数和(自身を除く): 7546677

約数列:

[1, 3, 151, 167, 281, 453, 501, 843, 25217, 42431, 46927, 75651, 127293, 140781, 7085977, 21257931]

約数ペア:

[(1, 21257931), (3, 7085977), (151, 140781), (167, 127293), (281, 75651), (453, 46927), (501, 42431), (843, 25217)]