28978278

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{689959}}^1$

素因数の和:689971

約数の個数: 16

約数和(自身を含む): 66236160

約数和(自身を除く): 37257882

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 689959, 1379918, 2069877, 4139754, 4829713, 9659426, 14489139, 28978278]

約数ペア:

[(1, 28978278), (2, 14489139), (3, 9659426), (6, 4829713), (7, 4139754), (14, 2069877), (21, 1379918), (42, 689959)]