20491303

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1297}}^1$

素因数の和:1402

約数の個数: 16

約数和(自身を含む): 24464704

約数和(自身を除く): 3973401

約数列:

[1, 7, 37, 61, 259, 427, 1297, 2257, 9079, 15799, 47989, 79117, 335923, 553819, 2927329, 20491303]

約数ペア:

[(1, 20491303), (7, 2927329), (37, 553819), (61, 335923), (259, 79117), (427, 47989), (1297, 15799), (2257, 9079)]