21390054

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{509287}}^1$

素因数の和:509299

約数の個数: 16

約数和(自身を含む): 48891648

約数和(自身を除く): 27501594

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 509287, 1018574, 1527861, 3055722, 3565009, 7130018, 10695027, 21390054]

約数ペア:

[(1, 21390054), (2, 10695027), (3, 7130018), (6, 3565009), (7, 3055722), (14, 1527861), (21, 1018574), (42, 509287)]