518481

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:222

約数の個数: 20

約数和(自身を含む): 800052

約数和(自身を除く): 281571

約数列:

[1, 3, 9, 27, 37, 81, 111, 173, 333, 519, 999, 1557, 2997, 4671, 6401, 14013, 19203, 57609, 172827, 518481]

約数ペア:

[(1, 518481), (3, 172827), (9, 57609), (27, 19203), (37, 14013), (81, 6401), (111, 4671), (173, 2997), (333, 1557), (519, 999)]