21170295

素因数分解:

$3^3\times 5^1\times {\mathrm{156817}}^1$

素因数の和:156831

約数の個数: 16

約数和(自身を含む): 37636320

約数和(自身を除く): 16466025

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156817, 470451, 784085, 1411353, 2352255, 4234059, 7056765, 21170295]

約数ペア:

[(1, 21170295), (3, 7056765), (5, 4234059), (9, 2352255), (15, 1411353), (27, 784085), (45, 470451), (135, 156817)]