21480907

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{331}}^1$

素因数の和:538

約数の個数: 16

約数和(自身を含む): 25157632

約数和(自身を除く): 3676725

約数列:

[1, 7, 73, 127, 331, 511, 889, 2317, 9271, 24163, 42037, 64897, 169141, 294259, 3068701, 21480907]

約数ペア:

[(1, 21480907), (7, 3068701), (73, 294259), (127, 169141), (331, 64897), (511, 42037), (889, 24163), (2317, 9271)]