18885729

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1\times {\mathrm{521}}^1$

素因数の和:848

約数の個数: 16

約数和(自身を含む): 25907904

約数和(自身を除く): 7022175

約数列:

[1, 3, 43, 129, 281, 521, 843, 1563, 12083, 22403, 36249, 67209, 146401, 439203, 6295243, 18885729]

約数ペア:

[(1, 18885729), (3, 6295243), (43, 439203), (129, 146401), (281, 67209), (521, 36249), (843, 22403), (1563, 12083)]