19800489

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:477

約数の個数: 24

約数和(自身を含む): 28529280

約数和(自身を除く): 8728791

約数列:

[1, 3, 19, 47, 57, 141, 361, 389, 893, 1083, 1167, 2679, 7391, 16967, 18283, 22173, 50901, 54849, 140429, 347377, 421287, 1042131, 6600163, 19800489]

約数ペア:

[(1, 19800489), (3, 6600163), (19, 1042131), (47, 421287), (57, 347377), (141, 140429), (361, 54849), (389, 50901), (893, 22173), (1083, 18283), (1167, 16967), (2679, 7391)]