21540903

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{4397}}^1$

素因数の和:4494

約数の個数: 16

約数和(自身を含む): 30398976

約数和(自身を除く): 8858073

約数列:

[1, 3, 23, 69, 71, 213, 1633, 4397, 4899, 13191, 101131, 303393, 312187, 936561, 7180301, 21540903]

約数ペア:

[(1, 21540903), (3, 7180301), (23, 936561), (69, 312187), (71, 303393), (213, 101131), (1633, 13191), (4397, 4899)]