20551887

素因数分解:

$3^4\times {\mathrm{487}}^1\times {\mathrm{521}}^1$

素因数の和:1020

約数の個数: 20

約数和(自身を含む): 30823056

約数和(自身を除く): 10271169

約数列:

[1, 3, 9, 27, 81, 487, 521, 1461, 1563, 4383, 4689, 13149, 14067, 39447, 42201, 253727, 761181, 2283543, 6850629, 20551887]

約数ペア:

[(1, 20551887), (3, 6850629), (9, 2283543), (27, 761181), (81, 253727), (487, 42201), (521, 39447), (1461, 14067), (1563, 13149), (4383, 4689)]