21577031

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1\times {\mathrm{367}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 25506816

約数和(自身を除く): 3929785

約数列:

[1, 7, 37, 227, 259, 367, 1589, 2569, 8399, 13579, 58793, 83309, 95053, 583163, 3082433, 21577031]

約数ペア:

[(1, 21577031), (7, 3082433), (37, 583163), (227, 95053), (259, 83309), (367, 58793), (1589, 13579), (2569, 8399)]