20871545

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{509}}^1$

素因数の和:712

約数の個数: 16

約数和(自身を含む): 25704000

約数和(自身を除く): 4832455

約数列:

[1, 5, 59, 139, 295, 509, 695, 2545, 8201, 30031, 41005, 70751, 150155, 353755, 4174309, 20871545]

約数ペア:

[(1, 20871545), (5, 4174309), (59, 353755), (139, 150155), (295, 70751), (509, 41005), (695, 30031), (2545, 8201)]