21160257

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{9649}}^1$

素因数の和:9712

約数の個数: 16

約数和(自身を含む): 30571200

約数和(自身を除く): 9410943

約数列:

[1, 3, 17, 43, 51, 129, 731, 2193, 9649, 28947, 164033, 414907, 492099, 1244721, 7053419, 21160257]

約数ペア:

[(1, 21160257), (3, 7053419), (17, 1244721), (43, 492099), (51, 414907), (129, 164033), (731, 28947), (2193, 9649)]