19888407

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2609}}^1$

素因数の和:2644

約数の個数: 36

約数和(自身を含む): 36101520

約数和(自身を除く): 16213113

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2609, 7623, 7827, 18263, 23481, 28699, 54789, 86097, 164367, 200893, 258291, 315689, 602679, 947067, 1808037, 2209823, 2841201, 6629469, 19888407]

約数ペア:

[(1, 19888407), (3, 6629469), (7, 2841201), (9, 2209823), (11, 1808037), (21, 947067), (33, 602679), (63, 315689), (77, 258291), (99, 200893), (121, 164367), (231, 86097), (363, 54789), (693, 28699), (847, 23481), (1089, 18263), (2541, 7827), (2609, 7623)]