21980294

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{42433}}^1$

素因数の和:42479

約数の個数: 16

約数和(自身を含む): 38699808

約数和(自身を除く): 16719514

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 42433, 84866, 297031, 594062, 1570021, 3140042, 10990147, 21980294]

約数ペア:

[(1, 21980294), (2, 10990147), (7, 3140042), (14, 1570021), (37, 594062), (74, 297031), (259, 84866), (518, 42433)]