21450065

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47143}}^1$

素因数の和:47168

約数の個数: 16

約数和(自身を含む): 31680768

約数和(自身を除く): 10230703

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 47143, 235715, 330001, 612859, 1650005, 3064295, 4290013, 21450065]

約数ペア:

[(1, 21450065), (5, 4290013), (7, 3064295), (13, 1650005), (35, 612859), (65, 330001), (91, 235715), (455, 47143)]