20280813

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{56809}}^1$

素因数の和:56836

約数の個数: 16

約数和(自身を含む): 32722560

約数和(自身を除く): 12441747

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 56809, 170427, 397663, 965753, 1192989, 2897259, 6760271, 20280813]

約数ペア:

[(1, 20280813), (3, 6760271), (7, 2897259), (17, 1192989), (21, 965753), (51, 397663), (119, 170427), (357, 56809)]