28282779

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{6323}}^1$

素因数の和:6407

約数の個数: 24

約数和(自身を含む): 47354112

約数和(自身を除く): 19071333

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 6323, 18969, 44261, 56907, 132783, 398349, 448933, 1346799, 3142531, 4040397, 9427593, 28282779]

約数ペア:

[(1, 28282779), (3, 9427593), (7, 4040397), (9, 3142531), (21, 1346799), (63, 448933), (71, 398349), (213, 132783), (497, 56907), (639, 44261), (1491, 18969), (4473, 6323)]