20188971

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{18539}}^1$

素因数の和:18567

約数の個数: 18

約数和(自身を含む): 32055660

約数和(自身を除く): 11866689

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 18539, 55617, 166851, 203929, 611787, 1835361, 2243219, 6729657, 20188971]

約数ペア:

[(1, 20188971), (3, 6729657), (9, 2243219), (11, 1835361), (33, 611787), (99, 203929), (121, 166851), (363, 55617), (1089, 18539)]