19820871

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{13679}}^1$

素因数の和:13715

約数の個数: 24

約数和(自身を含む): 34145280

約数和(自身を除く): 14324409

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 13679, 41037, 95753, 123111, 287259, 314617, 861777, 943851, 2202319, 2831553, 6606957, 19820871]

約数ペア:

[(1, 19820871), (3, 6606957), (7, 2831553), (9, 2202319), (21, 943851), (23, 861777), (63, 314617), (69, 287259), (161, 123111), (207, 95753), (483, 41037), (1449, 13679)]