19784079

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4423}}^1$

素因数の和:4507

約数の個数: 24

約数和(自身を含む): 33126912

約数和(自身を除く): 13342833

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4423, 4473, 13269, 30961, 39807, 92883, 278649, 314033, 942099, 2198231, 2826297, 6594693, 19784079]

約数ペア:

[(1, 19784079), (3, 6594693), (7, 2826297), (9, 2198231), (21, 942099), (63, 314033), (71, 278649), (213, 92883), (497, 39807), (639, 30961), (1491, 13269), (4423, 4473)]