20658309

素因数分解:

$3^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{1559}}^1$

素因数の和:2200

約数の個数: 16

約数和(自身を含む): 31549440

約数和(自身を除く): 10891131

約数列:

[1, 3, 7, 21, 631, 1559, 1893, 4417, 4677, 10913, 13251, 32739, 983729, 2951187, 6886103, 20658309]

約数ペア:

[(1, 20658309), (3, 6886103), (7, 2951187), (21, 983729), (631, 32739), (1559, 13251), (1893, 10913), (4417, 4677)]