18500481

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{6173}}^1$

素因数の和:6222

約数の個数: 20

約数和(自身を含む): 28388052

約数和(自身を除く): 9887571

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 6173, 18519, 55557, 166671, 228401, 500013, 685203, 2055609, 6166827, 18500481]

約数ペア:

[(1, 18500481), (3, 6166827), (9, 2055609), (27, 685203), (37, 500013), (81, 228401), (111, 166671), (333, 55557), (999, 18519), (2997, 6173)]