20204487

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:423

約数の個数: 24

約数和(自身を含む): 29906240

約数和(自身を除く): 9701753

約数列:

[1, 3, 9, 79, 157, 181, 237, 471, 543, 711, 1413, 1629, 12403, 14299, 28417, 37209, 42897, 85251, 111627, 128691, 255753, 2244943, 6734829, 20204487]

約数ペア:

[(1, 20204487), (3, 6734829), (9, 2244943), (79, 255753), (157, 128691), (181, 111627), (237, 85251), (471, 42897), (543, 37209), (711, 28417), (1413, 14299), (1629, 12403)]