21356551605

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{30292981}}^1$

素因数の和:30293036

約数の個数: 16

約数和(自身を含む): 34897515264

約数和(自身を除く): 13540963659

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 30292981, 90878943, 151464905, 454394715, 1423770107, 4271310321, 7118850535, 21356551605]

約数ペア:

[(1, 21356551605), (3, 7118850535), (5, 4271310321), (15, 1423770107), (47, 454394715), (141, 151464905), (235, 90878943), (705, 30292981)]