20865159

素因数分解:

$3^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{1459}}^1$

素因数の和:1699

約数の個数: 24

約数和(自身を含む): 34619520

約数和(自身を除く): 13754361

約数列:

[1, 3, 7, 9, 21, 63, 227, 681, 1459, 1589, 2043, 4377, 4767, 10213, 13131, 14301, 30639, 91917, 331193, 993579, 2318351, 2980737, 6955053, 20865159]

約数ペア:

[(1, 20865159), (3, 6955053), (7, 2980737), (9, 2318351), (21, 993579), (63, 331193), (227, 91917), (681, 30639), (1459, 14301), (1589, 13131), (2043, 10213), (4377, 4767)]