21086785

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1471}}^1$

素因数の和:1584

約数の個数: 16

約数和(自身を含む): 26284032

約数和(自身を除く): 5197247

約数列:

[1, 5, 47, 61, 235, 305, 1471, 2867, 7355, 14335, 69137, 89731, 345685, 448655, 4217357, 21086785]

約数ペア:

[(1, 21086785), (5, 4217357), (47, 448655), (61, 345685), (235, 89731), (305, 69137), (1471, 14335), (2867, 7355)]