42120729

素因数分解:

$3^4\times 7^1\times {\mathrm{74287}}^1$

素因数の和:74306

約数の個数: 20

約数和(自身を含む): 71910784

約数和(自身を除く): 29790055

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 74287, 222861, 520009, 668583, 1560027, 2005749, 4680081, 6017247, 14040243, 42120729]

約数ペア:

[(1, 42120729), (3, 14040243), (7, 6017247), (9, 4680081), (21, 2005749), (27, 1560027), (63, 668583), (81, 520009), (189, 222861), (567, 74287)]