21378171

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{601}}^1$

素因数の和:842

約数の個数: 16

約数和(自身を含む): 29127168

約数和(自身を除く): 7748997

約数列:

[1, 3, 71, 167, 213, 501, 601, 1803, 11857, 35571, 42671, 100367, 128013, 301101, 7126057, 21378171]

約数ペア:

[(1, 21378171), (3, 7126057), (71, 301101), (167, 128013), (213, 100367), (501, 42671), (601, 35571), (1803, 11857)]