21432905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{2213}}^1$

素因数の和:2380

約数の個数: 16

約数和(自身を含む): 27896400

約数和(自身を除く): 6463495

約数列:

[1, 5, 13, 65, 149, 745, 1937, 2213, 9685, 11065, 28769, 143845, 329737, 1648685, 4286581, 21432905]

約数ペア:

[(1, 21432905), (5, 4286581), (13, 1648685), (65, 329737), (149, 143845), (745, 28769), (1937, 11065), (2213, 9685)]