21158137

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{919}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 29675520

約数和(自身を除く): 8517383

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 253, 299, 919, 1001, 1771, 2093, 3289, 6433, 10109, 11947, 21137, 23023, 70763, 83629, 131417, 147959, 232507, 274781, 919919, 1627549, 1923467, 3022591, 21158137]

約数ペア:

[(1, 21158137), (7, 3022591), (11, 1923467), (13, 1627549), (23, 919919), (77, 274781), (91, 232507), (143, 147959), (161, 131417), (253, 83629), (299, 70763), (919, 23023), (1001, 21137), (1771, 11947), (2093, 10109), (3289, 6433)]