678282479

素因数分解:

$7^1\times {\mathrm{29}}^4\times {\mathrm{137}}^1$

素因数の和:260

約数の個数: 20

約数和(自身を含む): 808725264

約数和(自身を除く): 130442785

約数列:

[1, 7, 29, 137, 203, 841, 959, 3973, 5887, 24389, 27811, 115217, 170723, 707281, 806519, 3341293, 4950967, 23389051, 96897497, 678282479]

約数ペア:

[(1, 678282479), (7, 96897497), (29, 23389051), (137, 4950967), (203, 3341293), (841, 806519), (959, 707281), (3973, 170723), (5887, 115217), (24389, 27811)]