20910987

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{4933}}^1$

素因数の和:5099

約数の個数: 16

約数和(自身を含む): 31182880

約数和(自身を除く): 10271893

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 4933, 14799, 44397, 133191, 774481, 2323443, 6970329, 20910987]

約数ペア:

[(1, 20910987), (3, 6970329), (9, 2323443), (27, 774481), (157, 133191), (471, 44397), (1413, 14799), (4239, 4933)]