21126065

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{2749}}^1$

素因数の和:2836

約数の個数: 16

約数和(自身を含む): 26730000

約数和(自身を除く): 5603935

約数列:

[1, 5, 29, 53, 145, 265, 1537, 2749, 7685, 13745, 79721, 145697, 398605, 728485, 4225213, 21126065]

約数ペア:

[(1, 21126065), (5, 4225213), (29, 728485), (53, 398605), (145, 145697), (265, 79721), (1537, 13745), (2749, 7685)]