21077161

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4787}}^1$

素因数の和:4848

約数の個数: 16

約数和(自身を含む): 26199936

約数和(自身を除く): 5122775

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4787, 33509, 81379, 177119, 569653, 1239833, 3011023, 21077161]

約数ペア:

[(1, 21077161), (7, 3011023), (17, 1239833), (37, 569653), (119, 177119), (259, 81379), (629, 33509), (4403, 4787)]