20408883

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{4721}}^1$

素因数の和:4866

約数の個数: 16

約数和(自身を含む): 29918592

約数和(自身を除く): 9509709

約数列:

[1, 3, 11, 33, 131, 393, 1441, 4323, 4721, 14163, 51931, 155793, 618451, 1855353, 6802961, 20408883]

約数ペア:

[(1, 20408883), (3, 6802961), (11, 1855353), (33, 618451), (131, 155793), (393, 51931), (1441, 14163), (4323, 4721)]