15853887

素因数分解:

$3^4\times 7^1\times {\mathrm{27961}}^1$

素因数の和:27980

約数の個数: 20

約数和(自身を含む): 27067216

約数和(自身を除く): 11213329

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 27961, 83883, 195727, 251649, 587181, 754947, 1761543, 2264841, 5284629, 15853887]

約数ペア:

[(1, 15853887), (3, 5284629), (7, 2264841), (9, 1761543), (21, 754947), (27, 587181), (63, 251649), (81, 195727), (189, 83883), (567, 27961)]