20813499

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8929}}^1$

素因数の和:8979

約数の個数: 24

約数和(自身を含む): 35291360

約数和(自身を除く): 14477861

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 8929, 26787, 62503, 80361, 187509, 330373, 562527, 991119, 2312611, 2973357, 6937833, 20813499]

約数ペア:

[(1, 20813499), (3, 6937833), (7, 2973357), (9, 2312611), (21, 991119), (37, 562527), (63, 330373), (111, 187509), (259, 80361), (333, 62503), (777, 26787), (2331, 8929)]